scholarly journals Pengaruh Sistem Intercrop Padi Gogo - Rumput Terhadap Pertumbuhan Dan Hasil Padi Gogo

Agrologia ◽  
2018 ◽  
Vol 3 (2) ◽  
Author(s):  
Yugi R Ahadiyat ◽  
T Harjoso ◽  
Ismangil Ismangil
Keyword(s):  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
Upland Rice ◽  
Rice Variety ◽  
Growth And Yield ◽  
High Yield ◽  
Elephant Grass ◽  
Rice Varieties ◽  
Main Plot

The objective of this study was to determine characters of several drought tolerance and high yield upland rice variety under low soil water content in intercrops rice – grass system. The study was carried out in rain water irrigation area of Banjaranyar village. Experimental design was Split Plot Design with three replicates. The  Main plot was grass i.e no grass, elephant grass and lemon grass while  sub plot was upland rice variety i.e. Situ Patenggang, Kalimutu, Danau Gaung, Jatiluhur dan Cisokan. Under very low soil water content (<12%), there was growth and yield differenc between rice varieties grown in intercrops system with grass. Eventhough there was no effect of this intercrop system on plant growth of upland rice, elephant grass promote  higher rice yield, 0.88 t/ha than that without grass (0.39 t/ha) and with lemongrass (0.60 t/ha). Kalimutu variety showed the higher yield (1.38 t/ha)  with plant height  up to 46.27 cm and leaf area up to 4.63 cm2.

Simulating maize (Zea mays L.) growth and yield, soil nitrogen concentration, and soil water content for a long-term cropping experiment in Ontario, Canada

2014 ◽  
Vol 94 (3) ◽  
pp. 435-452 ◽  
Author(s):  
S. Liu ◽  
J. Y. Yang ◽  
C. F. Drury ◽  
H. L. Liu ◽  
W. D. Reynolds
Keyword(s):  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
Inorganic Nitrogen ◽  
Nitrogen Concentration ◽  
Growth And Yield ◽  
Model Data ◽  
Soil Inorganic Nitrogen ◽  
Soil Inorganic

Liu, S., Yang, J. Y., Drury, C. F., Liu, H. L. and Reynolds, W. D. 2014. Simulating maize (Zea mays L.) growth and yield, soil nitrogen concentration, and soil water content for a long-term cropping experiment in Ontario, Canada. Can. J. Soil Sci. 94: 435–452. A performance assessment of the Decision Support Systems for Agrotechnology Transfer (DSSAT) model (v4.5) including the CERES-Maize and CENTURY modules was conducted for continuous maize production under annual synthetic fertilization (CC-F) and no fertilization (CC-NF) using field data from a long-term (53-yr) cropping experiment in Ontario, Canada. The assessment was based on the accuracy with which DSSAT could simulate measured grain yield, above-ground biomass, leaf area index (LAI), soil inorganic nitrogen concentration, and soil water content. Model calibration for maize cultivar was achieved using grain yield measurements from CC-F between 2007 and 2012, and model evaluation was achieved using soil and crop measurements from both CC-F and CC-NF for the same 6-yr period. Good model–data agreement for CC-F grain yields was achieved for calibration (index of agreement, d=0.99), while moderate agreement for CC-NF grain yields was achieved for evaluation (d=0.79). Model–data agreement for above-ground biomass was good (d=0.83–1.00), but the model consistently underestimated for CC-F and overestimated for CC-NF. DSSAT achieved good model–data agreement for LAI in CC-F (d=0.82–0.99), but moderate to poor agreement in CC-NF (d=0.46–0.64). The CENTURY module of DSSAT simulated soil inorganic nitrogen concentrations with moderate to good model–data agreement in CC-F (d=0.74–0.88), but poor agreement in CC-NF (d=0.40–0.50). The model–data agreement for soil water content was moderate in 2007 and 2008 for both treatments (d=0.60–0.76), but poor in 2009 (d=0.46–0.53). It was concluded that the DSSAT cropping system model provided generally good to moderate simulations of continuous maize production (yield, biomass, LAI) for a long-term cropping experiment in Ontario, Canada, but generally moderate to poor simulations of soil inorganic nitrogen concentration and soil water content.

scholarly journals Application of a Dielectric Measurement Technique for Calculating Water Loss from Two Texture-contrasting Soils Grown with Upland Rice

2018 ◽  
Vol 1 (1) ◽  
pp. 8-14
Author(s):  
Bandi Hermawan ◽  
Pajrina Pajrina ◽  
Sumardi Sumardi ◽  
Indra Agustian
Keyword(s):  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
Water Use ◽  
Water Loss ◽  
Electrical Impedance ◽  
Upland Rice ◽  
Sandy Loam ◽  
Dielectric Measurement ◽  
Loamy Sand

Most of the water loss from the soil profile occurred through the evapotranspiration process especially when the plant covers were under maximum growth periods.  This study aimed to apply a technique of measuring a dielectric variable for calculating soil water content and crop water use in the coarse and medium textured soils grown with upland rice.  A couple of wires were inserted into the soil repacked in a 10-kg polybag grown with upland rice, the electrical impedance representing the dielectric value was measured using an instrument called the impedance meter.  The impedance values were converted into the soil water content using a nonlinear regression model of ? = a.ebZ where a and b were constants.  Results showed that the proposed technique of measuring the electrical impedance has successfully been applied to calculate the soil water content and the water use by upland rice grown in loamy sand and sandy loam soils.  Cumulative water loss from loamy sand was about 4 L plant-1 higher for the coarse loamy sand in the first 30 days of a measurement period, but about 10 L plant-1 higher for finer sandy loam on the 90th day of the rice growth period.  Higher biomass of upland rice in the sandy loam soil could increase the evapotranspiration rates and be the main reason for higher water use in this soil.

scholarly journals Karakter padi gogo pada sistem tanam padi-rumput dengan aplikasi asap cair tempurung kelapa pada kondisi kekeringan

Jurnal Agro ◽  
10.15575/6134 ◽  
2019 ◽  
Vol 6 (2) ◽  
pp. 168-180
Author(s):  
Yugi R Ahadiyat ◽  
Okti Herliana ◽  
Ida Widiyawati Widiyawati ◽  
Aprian Aji Santoso
Keyword(s):  
Upland Rice ◽  
Cropping System ◽  
Coconut Shell ◽  
Growth And Yield ◽  
Pennisetum Purpureum ◽  
Drought Condition ◽  
Multiple Cropping ◽  
Rice Varieties ◽  
Wood Vinegar ◽  
Main Plot

Peningkatan produksi padi lahan kering dapat dilakukan dengan sistem tumpang sari dan pemanfaatan asap cair tempurung  kelapa. Penelitian ini bertujuan untuk mengetahui pengaruh tumpangsari padi gogo-rumput dengan aplikasi asap cair tempurung kelapa terhadap karakter pertumbuhan, fisiologis, dan hasil padi gogo serta tingkat serangan hama dan patogen pada kondisi kekeringan. Penelitian menggunakan rancangan petak petak terbagi dengan tiga ulangan. Petak utama terdiri atas varietas padi gogo; Situ Bagendit, Inpago Unsoed 1 dan Situ Patenggang. Anak petak merupakan konsentrasi asap cair tempurung kelapa yaitu tanpa aplikasi, konsentrasi 1:100 dan konsentrasi 1:200. Anak-anak petak terdiri atas tanpa rumput, rumput gajah, sereh dan rumput gajah+sereh. Variabel yang diamati meliputi tinggi tanaman, jumlah dan luas daun, jumlah anakan, kandungan prolin, kadar klorofil a dan b, jumlah gabah isi, bobot gabah petak efektif, bobot gabah ha-1, indeks panen, serta intensitas serangan hama dan patogen. Hasil menunjukkan bahwa padi gogo yang ditanam pada kondisi kekeringan dengan penanaman rumput dan aplikasi asap cair tempurung kelapa belum mampu menghasilkan produksi yang optimal. Tumpangsari padi gogo-sereh lebih memberikan dampak terhadap karakter pertumbuhan dan hasil padi gogo dibandingkan dengan aplikasi asap cair tempurung kelapa. Secara umum, hasil padi gogo < 1 t ha-1, namun varietas Situ Patenggang menunjukan hasil lebih baik dibandingkan varietas lainnya. Intensitas serangan walang sangit lebih rendah pada sistem tumpangsari padi gogo varietas Situ Patenggang-sereh. ABSTRACTRice production in the upland can be increased by multiple cropping system and coconut shell wood vinegar application. The objectives of this study was to know the effects of intercropped rice–grass with application of coconut shell wood vinegar on characters of growth, physiological, and yield of upland rice as well as intensity of pest and disease under drought condition. Split split plot design with main plot of upland rice varieties i.e. Situ Bagendit, Inpago Unsoed 1 and Situ Patenggang, sub plot consist of coconut shell wood vinegar concentration i.e. 0, 1:100 and 1:200, sub sub-plot of rice–grass intercropped i.e. no grass, Pennisetum purpureum, lemongrass and Pennisetum purpureum+lemongrass were tested with three replications. Observed variables were plant height, leaf number, leaf area, number of tillers, contents of proline, chlorophyll a and b, weight of grain in effective plot, weight of grain ha-1, harvest index and intensity of pest and disease. The results showed that rice-grass intercropped and application of coconut shell wood vinegar in drought condition has not been able to produce the optimal production. Under drought condition, intercropped rice-grass had significantly impact on the character of growth and yield of the upland rice. Generally, all upland rice varieties gained low yield (<1 t ha-1), but Situ Patenggang variety showed higher yield than other varieties and low intensity of brownhopper attack as well as in rice-lemongrass intercropped.

scholarly journals Orchard Groundcover Management Impacts on Apple Tree Growth and Yield, and Nutrient Availability and Uptake

1994 ◽  
Vol 119 (2) ◽  
pp. 209-215 ◽  
Author(s):  
Ian A. Merwin ◽  
Warren C. Stiles
Keyword(s):  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
Fruit Yield ◽  
Growth And Yield ◽  
Meadow Vole ◽  
Cross Sectional ◽  
Phytophthora Root Rot ◽  
K Fertilizer ◽  
Leaf N

This study compared various conventional and alternative orchard groundcover management systems (GMSs)—including a crownvetch “living mulch” (CNVCH), close-mowed (MWSOD) and chemically growth-regulated (GRSOD) sodgrasses, pre-emergence (NDPQT) and two widths of postemergence (GLY1.5 and GLY2.5) herbicides, hay-straw mulch (STMCH), and monthly rototillage (tilled)—during 6 years in a newly established apple (Malus domestica Borkh.) planting. Trunk cross-sectional area and fruit yield were higher in STMCH, GLY, and NDPQT, intermediate in tilled, and lower in GRSOD, MWSOD, and CNVCH treatments after 5 years. Despite N and K fertilizer applications, extractable soil N and leaf N concentrations were reduced under MWSOD and GRSOD, and soil K, P, and B concentrations were greater under STMCH. Leaf K concentrations were usually highest in STMCH trees, even when heavily cropped; leaf K declined below the sufficiency range in GLY, NDPQT, and tilled trees as they began to bear fruit. Leaf Ca was marginally deficient in all trees and was unaffected by GMS. Foliar Mn, Zn, and B concentrations declined rapidly in all treatments during 2 years without micronutrient fertilizers. Leaf Cu was higher in herbicide and tilled treatments where seasonal soil water content was intermediate (22% to 27%) and lower where soil was very wet or dry for most of the 1988 growing season. Multiple regression analysis indicated that leaf N and B and soil organic matter in 1990, and mean soil water content during the unusually dry Summer 1988, were the best predictors of fruit yield in 1990. Phytophthora root rot and meadow vole depredation were serious problems in STMCH and CNVCH trees. GMSs greatly affected tree establishment, nutrition, and yield; each system involves tradeoffs among important short- and long-term impacts on the orchard agroecosystem.

scholarly journals Response of Some Improved Upland Rice Varieties to Different Sources and Rates of Nitrogen Fertilizer in A Humid Rain Forest Region

2021 ◽  
Vol 5 (2) ◽  
pp. 69-91
Author(s):  
Demben Moses Esang ◽  
Angus Onwudiwe Ikeh
Keyword(s):  
Grain Yield ◽  
Ammonium Sulphate ◽  
Upland Rice ◽  
Block Design ◽  
Growth And Yield ◽  
High Yield ◽  
Rice Varieties ◽  
Calcium Ammonium Nitrate ◽  
Different Sources ◽  
N Use

ABSTRACT Nitrogen (N) is a major lacking nutrient element for the growth and yield of cereal crops Calabar, it is necessary to determine the response different sources and rates of N  in four varieties of upland  rice. Treatments comprised factorial combinations of the four rice varieties (NERICA 1, NERICA 2, FARO 45, FARO 48), three straight inorganic N sources (urea, Calcium ammonium nitrate, ammonium sulphate) and four levels of N (0, 30, 60, 90 kg N ha-1) laid in randomized complete block design. The N was split applied twice; one-third at the beginning of tillering and the remainder at panicle initiation. The results showed that the source of fertilizer N did not affect significantly the growth and yield of the rice crop (p=0.05). Considering that soils in Calabar are acid sands it will not be advisable to consistently apply such acidifying fertilizers as ammonium sulphate or urea except with soil liming which will undoubtedly increase the cost of production and probably make it unprofitable to cultivate rice in the area. The fertilized crop grew taller and produced more biomass compared with the control. It also produced significantly more tillers hill-1, panicles m-2, grains panicle-1, weight of 1,000 grains and grain yield. However, whereas NERICA 1, NERICA 2 and FARO 45 were more responsive to lower N levels, the grain yield of FARO 48 was significantly higher when the crop received 90 kg N ha-1 compared with other varieties, probably because of its longer growth duration in the field.  The responsiveness of these varieties to low N application was the result of their higher grain yield resulting from enhanced N use efficiency. Genotypes that were most responsive to low N input levels were early maturing with high N-use efficiencies. On the basis of grain yield, it is recommended that for  high yield in the humid region of Cross River State, N should be applied at the rate of  60 kg ha-1 for early-  and 90 kg ha-1 or above for the medium-maturing upland rice varieties. Keywords: Rice, Varieties, Growth and Yield

scholarly journals The Influence of Mulching with Straw on the Field Microclimate and Ginger Growth

HortScience ◽  
2004 ◽  
Vol 39 (4) ◽  
pp. 778C-778
Author(s):  
Kun Xu* ◽  
Xiufeng Wang ◽  
Fang Wang
Keyword(s):  
Relative Humidity ◽  
Light Intensity ◽  
Soil Temperature ◽  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
Air Temperature ◽  
Growth And Yield

Mulching with straw increase soil water content, air relative humidity and air temperature, but decreased soil temperature. Though mulching with straw didn't change light intensity, ginger growth and yield were the same as shading. The growth and yield under shading and mulching with straw were both higher than that of naked soil.

scholarly journals PEMBERIAN BERBAGAI PUPUK ORGANIK TERHADAP PERTUMBUHAN DAN PRODUKSI BEBERAPA VARIETAS PADI GOGO (Oryza sativa L.) YANG DITANAM DIANTARA TANAMAN KELAPA SAWIT BELUM MENGHASILKAN

2019 ◽  
Vol 33 (3) ◽  
pp. 231-242
Author(s):  
Fetmi Silvina ◽  
Arnis en Yulia ◽  
Noreza Masri
Keyword(s):  
Oil Palm ◽  
Upland Rice ◽  
Oryza Sativa L ◽  
Block Design ◽  
Organic Fertilizer ◽  
Rice Variety ◽  
Organic Fertilizers ◽  
Chicken Manure ◽  
Growth And Yield ◽  
Rice Varieties

The study aimed to determine the effect of various organic fertilizers on growth and yield of several varieties of upland rice, and the response of upland rice varieties to organic fertilizers under the stands of oil palm trees have not produced (TBM). The researches conducted in March until July 2016. This study was a randomized block design factorial trial with two factors and three replications, the first factor was some upland rice variety consist of ; Inpago 8 (V1), Situ Bagendit (V2), and Inpago 9 (V3) and the second factor was the variety of organic fertilizers such as; without organic fertilizer (BO0), compost of oil palm empty fruit bunches (BO1), chicken manure (BO2), Kirinyuh or green manure (BO3). Data were analyzed by ANOVA and a further test of Duncan’s multiple range test (DNMRT) level of 5%. The results showed that the varieties Situ Bagendit gave the best response to organic fertilizer by weight of dry milled grain at 4.6 tonnes/ha in the giving of chicken manure.

scholarly journals Growth and Yield of Inpari 29 Rice Varieties on Raised-bed and Different Depths of Sunken-bed in Saline Field

2019 ◽  
Vol 3 (3) ◽  
pp. 135
Author(s):  
Nasrudin Nasrudin ◽  
Budiastuti Kurniasih
Keyword(s):  
Nitrate Reductase ◽  
Nitrate Reductase Activity ◽  
Reductase Activity ◽  
Rice Variety ◽  
Growth And Yield ◽  
Marginal Lands ◽  
Rice Varieties ◽  
Main Plot ◽  
Different Depths ◽  
Raised Bed

Increased productivity of rice is required to meet the increasing food demand. Utilization of marginal lands, such as saline land is one of the solutions applicable to increase rice production. The objective of this study was to determine the growth and yield of Inpari 29 rice variety planted on raised-bed and different depths of sunken-bed in saline field. This study used the Split Plot Design with two treatments. The depth as the main plot consisted of two depth levels: a depth of 50 cm and a depth of 25; and the planting area field as the subplot that consisted of two levels: raised-bed and sunken-bed. The treatment was repeated three times. The rice planted in sunken-bed showed higher growth than in raised-bed as indicated by the high content of chlorophyll a, chlorophyll b, total chlorophyll, nitrate reductase activity and plant height. The rice planted in the sunken-bed yielded higher than in raised-bed as indicated by higher harvest index and the weight of grain per clump. Rice planted in 25 cm depth showed higher nitrate reductase activity and grain weight per clump than in 50 cm depth.

scholarly journals Evaluating APSIM-and-DSSAT-CERES-Maize Models under Rainfed Conditions Using Zambian Rainfed Maize Cultivars

Nitrogen ◽  
2021 ◽  
Vol 2 (4) ◽  
pp. 392-414
Author(s):  
Charles B. Chisanga ◽  
Elijah Phiri ◽  
Vernon R. N. Chinene
Keyword(s):  
Grain Yield ◽  
Water Content ◽  
Soil Water ◽  
Soil Water Content ◽  
Growth And Yield ◽  
Research Station ◽  
Central Research ◽  
Management Options ◽  
Study Objective ◽  
Maize Cultivars

Crop model calibration and validation is vital for establishing their credibility and ability in simulating crop growth and yield. A split–split plot design field experiment was carried out with sowing dates (SD1, SD2 and SD3); maize cultivars (ZMS606, PHB30G19 and PHB30B50) and nitrogen fertilizer rates (N1, N2 and N3) as the main plot, subplot and sub-subplot with three replicates, respectively. The experiment was carried out at Mount Makulu Central Research Station, Chilanga, Zambia in the 2016/2017 season. The study objective was to calibrate and validate APSIM-Maize and DSSAT-CERES-Maize models in simulating phenology, mLAI, soil water content, aboveground biomass and grain yield under rainfed and irrigated conditions. Days after planting to anthesis (APSIM-Maize, anthesis (DAP) RMSE = 1.91 days; DSSAT-CERES-Maize, anthesis (DAP) RMSE = 2.89 days) and maturity (APSIM-Maize, maturity (DAP) RMSE = 3.35 days; DSSAT-CERES-Maize, maturity (DAP) RMSE = 3.13 days) were adequately simulated, with RMSEn being <5%. The grain yield RMSE was 1.38 t ha−1 (APSIM-Maize) and 0.84 t ha−1 (DSSAT-CERES-Maize). The APSIM- and-DSSAT-CERES-Maize models accurately simulated the grain yield, grain number m−2, soil water content (soil layers 1–8, RMSEn ≤ 20%), biomass and grain yield, with RMSEn ≤ 30% under rainfed condition. Model validation showed acceptable performances under the irrigated condition. The models can be used in identifying management options provided climate and soil physiochemical properties are available.

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