Yield Response of Different Sugarcane Genotypes under Agro-climatic Conditions of Thatta

2003 ◽  
Vol 4 (1) ◽  
pp. 90-92
Author(s):  
Yar Muhammad Memon ◽  
Haji Khan Keerio ◽  
Riaz Noor Panhwar ◽  
Babar Raza Qazi ◽  
Muhammad Aslam Rajp ◽  
...  
Keyword(s):  
Climatic Conditions ◽  
Yield Response

scholarly journals Response of cowpea genotypes to water stress in temperate climatic conditions

Genetika ◽  
2016 ◽  
Vol 48 (2) ◽  
pp. 463-472
Author(s):  
Borivoj Pejic ◽  
Ksenija Mackic ◽  
Dragisa Milosev ◽  
Erkut Peksen ◽  
Srdjan Seremesic ◽  
...  
Keyword(s):  
Water Stress ◽  
Global Climate ◽  
Climatic Conditions ◽  
Cultivated Plants ◽  
Yield Response ◽  
Future Research ◽  
Cowpea Cultivars ◽  
Relative Decline ◽  
Yield Response Factor ◽  
Genotype G1

Mitigation of global climate change impact on the agricultural production is the major priorities in future research. Cowpea as a drought tolerant plant is interesting for growing in semi-arid climate of the Vojvodina region. The effect of water stress on yield of cultivated plants can be obtained by calculating the yield response factor (Ky) which represents the ratio between the relative evapotranspiration deficit (1-ETa/ETm) and the relative decline in yield (1-Ya/Ym). The values of Ky ranged from 0.91 to 1.17 for genotype G1 and G2 respectively. Genotype G1, with a value lower than 1 of Ky, shows a good tolerance to water deficit, on the contrary, genotype G2, with a greater Ky than 1, expresses some sensitivity to water stress. Obtained results will be used in breeding programs to develop cowpea cultivars tolerant to stressful conditions, primarily to water stress, as well as more productive in water use.

Phosphate concentration in siratro as a guide to its phosphate status in the field

1970 ◽  
Vol 10 (45) ◽  
pp. 426 ◽  
Author(s):  
RE White ◽  
KP Haydock
Keyword(s):  
Relative Yield ◽  
Moisture Stress ◽  
Critical Value ◽  
Climatic Conditions ◽  
Buffering Capacity ◽  
Phosphate Concentration ◽  
Yield Response ◽  
Soil Group ◽  
Phosphate Supply ◽  
Effect Of Moisture

Siratro (Phaseolus atropurpureus) was grown under a range of soil and climatic conditions in sub-tropical Queensland, over the years 1964 to 1967. Phosphate concentration in the tops, sampled immediately prior to flowering, was poorly correlated with either the relative yield response to applied phosphorus, or the amount of phosphorus required to lift yield to a maximum. Fifty per cent of the variation in P required could be accounted for by regression on great soil group, which crudely reflected differences in phosphate buffering capacity between soils. The critical value of phosphorus in the plant, corresponding to a yield of 90 per cent of the maximum, varied from 0.16 to 0.29 per cent. Twenty-five per cent of this variation was due to differences in the rain falling in the 28 days prior to sampling : the lower the rainfall, the lower the critical value. Rain falling 28 days prior to sampling and great soil group together accounted for 41 per cent of the variation in critical value. The effect of moisture stress on the critical value was more likely plant physiological, than one of a diminished phosphate supply from the soil.

scholarly journals Water-Yield Relations of Drip Irrigated Watermelon in Temperate Climatic Conditions

2016 ◽  
Vol 65 (1-2) ◽  
pp. 53-59
Author(s):  
Borivoj Pejić ◽  
Ksenija Mačkić ◽  
Srdjan Pavković ◽  
Branka Ljevnaić-Mašić ◽  
Miroljub Aksić ◽  
...  
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Irrigation Water ◽  
Water Productivity ◽  
Relative Yield ◽  
Climatic Conditions ◽  
Yield Response ◽  
Water Yield ◽  
Irrigation Water Use ◽  
Use Efficiency

Summary The objective of the study, conducted in Vojvodina a northern part of the Serbia Republic, was to analyse the effect of drip irrigation on yield, evapotranspiration and water productivity of watermelon (Cirullus lanatus Thunb.) grown with plasticulture. Irrigation was scheduled on the basis of water balance method. Daily evapotranspiration was computed using the reference evapotranspiration and crop coefficient. The yield of watermelon in irrigation conditions (37,28 t/ha) was significantly higher compared to non irrigated (9,98 t/ha). Water used on evapotranspiration in irrigation conditions was 398 mm and 117 mm on non irrigated variant. The crop yield response factor of 1,04 for the whole growing season reveals that relative yield decrease was nearly equal to the rate of evapotranspiration deficit. The values of irrigation water use efficiency and evapotranspiration water use efficiency were 9,93 kg/m3 and 10,29 kg/m3 respectively. The determined results could be used as a good platform for watermelon growers in the region, in terms of improvement of the optimum utilization of irrigation water.

Quantifying the response of crops to shelter in the agricultural regions of South Australia

2008 ◽  
Vol 59 (10) ◽  
pp. 950 ◽  
Author(s):  
M. R. Bennell ◽  
A. P. Verbyla
Keyword(s):  
South Australia ◽  
Crop Productivity ◽  
Climatic Conditions ◽  
Yield Potential ◽  
Yield Response ◽  
Root Pruning ◽  
Yield Data ◽  
Woody Perennials ◽  
Yield Increase ◽  
Pulse Crops

Integrating belts of woody perennials into Australian farms is proposed as a method of enhancing crop productivity through shelter benefits while addressing natural resource management issues including groundwater recharge. This paper presents yield data from cereal and pulse crops collected from windbreak sites through the eastern agricultural districts of South Australia, using a harvester equipped with a yield monitor. The crop response followed the expected pattern of a competition zone of reduced yield of 1–4 tree heights (H) adjacent to the windbreak followed by a shelter benefit zone of unchanged or improved yield extending out to a maximum of 20H. The yield response in the sheltered benefit zone is +3.7% for all cereals (2.2H–9.7H) and is +14.0% for all pulse crops (1.7H–10.4H). Wheat and barley have similar results, with gains in the shelter benefit zones of 4.1% and 2.1%, respectively, with windbreak competition effects resulting in net yields of 3.0% for wheat and –1.1% for barley in the sheltered zones. Faba bean (Vicia faba) shows a strong consistent response to wind shelter, with a yield increase of 19.6% in the shelter benefit zone (1.5H–19.6H) and net gain of 19.1% in the sheltered zone (crop edge at 1.0H and extending to 19.6H). The response of cereals to sheltered effects varied across the years of the survey, with net positive results in 1997 (7.4%) and 1999 (7.5%) and close to zero in 1998 and 2000. A theoretical prediction of potential crop yield based on climate for the years of the survey showed that 1997 and 1999 had lower yield potential than 2000 and 1998. This suggests that the climatic conditions occurring during the growing season also influence crop shelter responses. Where cereals are the predominant crop the net yield returns from windbreaks would be small, even if root pruning could be successfully undertaken.

scholarly journals Cultivar Difference in the Yield Response to Climatic Conditions after Heading Stage in High-Yielding Rice Cultivars

2016 ◽  
Vol 85 (4) ◽  
pp. 367-372 ◽  
Author(s):  
Kenji Nagata ◽  
Akihiro Ohsumi ◽  
Satoshi Yoshinaga ◽  
Hiroshi Nakano
Keyword(s):  
Climatic Conditions ◽  
Yield Response ◽  
Rice Cultivars ◽  
Cultivar Difference ◽  
Heading Stage

scholarly journals Corn yield response to partial rootzone drying and deficit irrigation strategies applied with drip system

2009 ◽  
Vol 55 (No. 11) ◽  
pp. 494-503 ◽  
Author(s):  
A. Yazar ◽  
F. Gökçel ◽  
M.S. Sezen
Keyword(s):  
Water Use Efficiency ◽  
Water Use ◽  
Deficit Irrigation ◽  
Root Zone ◽  
Climatic Conditions ◽  
Yield Response ◽  
Corn Yield ◽  
Grain Yields ◽  
Significant Difference ◽  
Use Efficiency

This paper evaluates the effect of partial root zone drying (PRD) and deficit irrigation (DI) strategies on yield and water use efficiency of the drip-irrigated corn on clay soils under the Mediterranean climatic conditions in Southern Turkey. Four deficit (PRD-100; PRD-75; PRD-50; and DI-50) and one full irrigation (FI) strategies based on cumulative evaporation (E<sub> pan</sub>) from class A pan at 7-day interval were studied. Full (FI) and deficit irrigation (DI-50) treatments received 100 and 50% of E<sub>pan</sub>, respectively. PRD-100, PRD-75 and PRD-50 received 100, 75 and 50% E<sub>pan</sub> value, respectively. The highest water use was observed in FI as 677 mm, the lowest was found in PRD-50 as 375 mm. PRD-100 and DI-50 resulted in similar water use (438 and 445 mm). The maximum grain yield was obtained from the FI as 10.40 t/ha, while DI-50 and PRD-100 resulted in similar grain yields of 7.72 and 7.74 t/ha, respectively. There was a significant difference among the treatments with respect to grain yields (<i>P</i> < 0.01). The highest water use efficiency (WUE) was found in PRD-100 as 1.77 kg/m<sup>3</sup>, and the lowest one was found in FI as 1.54 kg/m<sup>3</sup>.

scholarly journals Yield Response and Nutrient Use Efficiencies under Different Fertilizer Applications in Maize (Zea mays L.) In Contrasting Agro Ecosystems

2019 ◽  
pp. 1-19 ◽  
Author(s):  
Tesfaye Balemi ◽  
Jairos Rurinda ◽  
Mesfin Kebede ◽  
James Mutegi ◽  
Gebresilasie Hailu ◽  
...  
Keyword(s):  
Grain Yield ◽  
Moisture Stress ◽  
Climatic Conditions ◽  
Yield Response ◽  
N Application ◽  
High Rainfall ◽  
Maize Grain Yield ◽  
Nutrient Use ◽  
Maize Grain ◽  
Nutrient Use Efficiencies

Variability in crop response and nutrient use efficiencies to fertilizer application is quite common under varying soil and climatic conditions. Understanding such variability is vital to develop farm- and area- specific soil nutrient management and fertilizer recommendations. Hence the objectives of this study were to assess maize grain yield response to nutrient applications for identifying yield-limiting nutrients and to understand the magnitude of nutrient use efficiencies under varying soil and rainfall conditions. A total of 150 on-farm nutrient omission trials (NOTs) were conducted on farmers’ field in high rainfall and moisture stress areas. The treatments were control, PK, NK, NP, NPK and NPK+ secondary and micronutrients. Maize grain yield, nutrient uptake, agronomic and recovery efficiencies of N and P differed between fertilizer treatments and between the contrasting agro-ecologies. The AEN ranged from 24.8 to 32.5 kg grain kg-1 N in Jimma area and from 1.0 kg grain kg-1 N (NK treatment) to 10.2 kg grain kg-1 N (NPK treatment) at Adami Tullu and from 0.1 kg grain kg-1 N (NK treatment) to 8.3 kg grain kg-1 N (NPK treatment) at Bulbula. The differing parameters between the agro-ecologies were related to difference in rainfall amount and not to soil factors. Grain yield response to N application and agronomic efficiencies of N and P were higher in the high rainfall area than in the moisture stress areas. Grain yield responded the most to nitrogen (N) application than to any other nutrients at most of the experimental sites. Owing to the magnificent yield response to N fertilizer in the current study, proper management of nitrogen is very essential for intensification of maize productivity in most maize growing areas of Ethiopia.

Can the application of rare earth elements improve yield and decrease the uptake of cadmium in ryegrass-dominated pastures?

Soil Research ◽  
2015 ◽  
Vol 53 (7) ◽  
pp. 826 ◽  
Author(s):  
R. W. McDowell ◽  
W. Catto ◽  
T. Orchiston
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Dry Matter ◽  
Climatic Conditions ◽  
Soil Survey ◽  
Yield Response ◽  
Volcanic Soils ◽  
Cd Uptake ◽  
Available Soil Moisture ◽  
The Right

Rare earth elements (REEs) have been linked to increases and decreases in plant growth and the uptake of biotoxic metals such as Cadmium (Cd). We hypothesised that under the right soil and climatic conditions the application REEs to soil may improve yield of ryegrass-dominated pasture and inhibit Cd uptake in foliage. A soil survey measuring REEs concentrations in soils from across New Zealand showed that REEs were enriched in Volcanic compared with Sedimentary-derived soils, and in soils used for dairying compared with those used for sheep and beef. From a range of REEs applied to ryegrass with and without N, lanthanum (La) showed minor yield improvement under glasshouse conditions, but only for Sedimentary (not Volcanic) soils low in REE concentration and at 40% available soil moisture or less. A similarly mixed yield response occurred in a field trial. Decreases in the Cd concentration of ryegrass (mg kg–1) only occurred in the harvests after application (40% at 20 kg La ha–1 for one soil) and did not translate into an annual effect. We conclude that there was insufficient evidence to recommend the use of La (screened from a range of REEs as the most promising) to increase annual dry matter yield or decrease Cd uptake from ryegrass-dominated pastures.

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