Plant Hormones enhance the yield by altering the physio-biological parameters in pigeonpea (Cajanus cajan L.)

Author(s):  
A. Sumathi ◽  
V. Babu Rajendra Prasad ◽  
Mallika Vanangamudi

A field trial was conducted using three varieties viz., VBN 1, APK 1 and VBN 3 to study the influence of plant growth regulators (PGRs) namely napthaleneacetic acid (NAA), Benzyl adenine (Cytokinin), gibberellic acid (GA3), ethrel, triacontanol, triiodobenzoic acid (TIBA,) mepiquat chloride (MC), salicylic acid (SA) and brassinolide (brassinosteroid (BR) in enhancing the yield potential of pigeonpea. The experiment was laid out in Factorial Randomized Block Design (FRBD) with three replications. PGRs have significantly enhanced the yield by influencing biochemical and physiological parameters. The variety VBN 3 outperformed the other varieties by recording highest yield. Among different PGR’s tested, BR proved its worthiness in terms of yield and its components by enhancing growth parameters and yield. It can be concluded that foliar application of BR can be used as a physiological intervention to enhance the overall photosynthetic efficiency, total dry matter production, harvest index and grain yield in pigeonpea.

2010 ◽  
Vol 39 (8) ◽  
pp. 1666-1675 ◽  
Author(s):  
Marcio Mahmoud Megda ◽  
Francisco Antonio Monteiro

The objective of this work was to study morphogenic characteristics, and dry matter production of roots and shoots of marandu palisadegrass (Brachiaria brizantha cv. Marandu) submitted to combinations of nitrogen and potassium, in a nutritive solution, employing silica as substrate. The experiment was carried out in a greenhouse during the summer. It was used a 5² fractionated factorial scheme with 13 combinations of nitrogen and potassium, which were distributed in a randomized block design, with four replications. The nitrogen × potassium interaction was significant for the number of tillers and leaves, for leaf area, for shoots and root section dry mass, for total length and surface and specific length and surface in the roots. Production of aerial part dry mass positively correlated with the number of tillers and leaves and grass leaf area. Nitrogen rates modulated the root system development, and the root specific length and surface decreased when high rates of nitrogen and potassium were supllied. Nitrogen and potassium influence Marandu palisadegrass morphogenic characteristics, which are determinant for grass dry matter production.


CERNE ◽  
2017 ◽  
Vol 23 (4) ◽  
pp. 507-515 ◽  
Author(s):  
Veronica Brito da Silva ◽  
Rogerio Figueiredo Daher ◽  
Bruna Rafaela da Silva Menezes ◽  
Maria Lorraine Fonseca Oliveira ◽  
Maria do Socorro Bezerra Araújo ◽  
...  

ABSTRACT The elephant-grass undergoes successive cutting and periodical evaluations that it possible to identify clones with high stability for dry matter production, which can be used for energy production. The present study was carried out to evaluate stability dry matter yield for different parametric and non-parametric methods in elephant grass genotypes for biomass production undergoes successive cutting in the agroclimatic conditions of the Norte Fluminense (RJ, Brazil). The variable measured in the 40 genotypes was dry matter yield (DMY) at 2009, 2010 and 2011 in a field study designed as randomized block design with two replicates. Each sample was grown in different environment condition. The stability methods tested were the Yates and Cochran’s, Plaisted and Peterson’s, Wricke’s ecovalence, Annicchiarico’s, Lin and Binns’ and Kang and Phan’s. Results indicated that cutting (E) and genotypes (G) influenced significantly on the performance of dry matter yield. The non-parametric stability methods were effective for the evaluation of stability in dry matter yield. Genotypes Mercker, Pinda-México, Mercker 86-México, Guaçu/IZ, Mercker Pinda, P-241-Piracicaba and Cubano Pinda were stable stability dry matter yield. Hence, there are genotypes may be exploited in future breeding programmes in order to improve productivity of upland elephant grass over environment.


2019 ◽  
Vol 11 (9) ◽  
pp. 83
Author(s):  
Jackson de M. Alves ◽  
Alex S. de Lima ◽  
Cesenildo de F. Suassuna ◽  
Francisco R. A. Figueiredo ◽  
Toshik Iarley da Silva ◽  
...  

Zucchini (Cucurbita pepo L.) is a horticultural crop of great socioeconomic importance in Brazil and in the world. However, inappropriate fertilization management, such as over-fertilization of soils, may become a limiting factor for its development. Thus, the aim of this study was to evaluate the morpho-physiological behavior of zucchini submitted to nitrogen (N) doses applied via soil and foliar application of silicon (Si). The treatments were distributed in split-plot scheme in a randomized block design, with three replications. The plot was formed by silicon levels (0.0 and 6.0 g plant-1) and the subplots constituted by five nitrogen levels (30, 60, 90, 120 and 150 kg ha-1), adding up to 30 experimental units. Gas exchanges and growth parameters were assessed at 35 days after planting. The data were submitted to analysis of variance by the F test and in the cases of significance was performed a polynomial regression analysis for the nitrogen factor and Tukey test for the silicon factor. The supply of Si positively enhances the effects of N on growth characteristics and gas exchanges of zucchini. The simultaneous application of Si and N does not influence the leaf area of zucchini. The N dose of 93.9 kg ha-1 provides greater assimilation of CO2 in zucchini plants under the conditions in which the experiment was performed.


2018 ◽  
Vol 85 (0) ◽  
Author(s):  
Suzete Fernandes Lima ◽  
Leandro Spíndola Pereira ◽  
Gustavo Dorneles Sousa ◽  
Simonny Araújo Vasconcelo ◽  
Adriano Jakelaitis ◽  
...  

ABSTRACT: The use of herbicide underdoses allows minimizing the competition of grasses on annual crops, enabling simultaneous cultivation. In this context, the objective of this study was to investigate glyphosate underdoses on the suppression of the initial growth of three Panicum maximum cultivars aiming at the integrated cultivation, in addition to the effects of forage species on the incidence and development of weeds. Three field experiments were conducted. The experimental design was a randomized block design with four replications and eight treatments consisting of increasing glyphosate doses (0, 54, 108, 270, 378, 540, 756, and 1,080 g a.e. ha−1). An atrazine dose of 1,200 g a.i. ha−1 was added to each treatment. Plant phytotoxicity assessments were performed at 7, 14, 21, and 28 days after application. At 80 and 125 days after sowing, the assessments of total dry matter production, leaf dry matter, stem dry matter, and leaf to stem ratio were carried out, in addition to density and dry matter production of weed community. Glyphosate underdoses below 215, 65, and 90 g a.e. ha-1 have a potential to be investigated aiming at the management of P. maximum cv. Atlas, P. maximum cv. Mombasa, and P. maximum cv. Tanzania under intercropping. The three forage species are effective in suppressing weeds.


2010 ◽  
Vol 34 (2) ◽  
pp. 435-442 ◽  
Author(s):  
Alberto C. de Campos Bernardi ◽  
Marisa Bezerra de Mello Monte ◽  
Paulo Renato Perdigão Paiva ◽  
Carlos Guarino Werneck ◽  
Patrick Gesualdi Haim ◽  
...  

Zeolites are hydrated crystalline aluminosilicate minerals of natural occurrence, structured in rigid third dimension net that can be used as slow release plant-nutrient source. The main objective of this study was to evaluate the effects of plant growth substrate under zeolite application, enriched with N, P and K, on dry matter yield and on nutrient contents in consecutive crops of lettuce, tomato, rice, and andropogon grass. The experiment was carried out in a greenhouse, with 3 kg pots with an inert substrate, evaluated in a randomized block design with three replications. Treatments consisted of four types of enrichment of concentrated natural zeolite: concentrated zeolite (Z) only, zeolite + KNO3 (ZNK), zeolite + K2HPO4 (ZPK) and zeolite + H3PO4 + apatite (ZP), and a control grown in substrate fertilized with a zeolite-free nutrient solution. Four levels of enriched zeolite were tested: 20, 40, 80, and 160 g/pot. Four successive crops were grown on the same substrate in each pot: lettuce, tomato, rice, and andropogon grass. Results indicated that N, P and K enriched zeolite was an adequate slow-release nutrient source for plants. The total dry matter production of above-ground biomass of four successive crops followed a descending order: ZP > ZPK > ZNK > Z.


2017 ◽  
Vol 4 (3) ◽  
pp. 157-164
Author(s):  
Mohammad Issak ◽  
Most Moslama Khatun ◽  
Amena Sultana

The experiment was conducted to study the effect of salicylic acid (SA) as foliar spray on yield and yield contributing characters of BRRI Hybrid dhan3.The experiment was laid out in a randomized complete block design (RCBD) with three replications and six treatment combinations as, T1: 0 μM SA, T2: 200 μM SA, T3: 400 μM SA, T4: 600 μM SA, T5: 800 μM SA and T6: 1000 μM SA. The results revealed that biomass production, dry matter production and yield and yield contributing characters were significantly increased due to the foliar application of SA. At the maximum tillering (MT) stage, the highest biomass production (15.0 t/ha) and dry matter production was observed in T3 treatment. Treatments T4, T5 and T6 showed significant variation on the effective tillers/hill. The maximum effective tillers/hill were found in the treatment T6. The percentages of spikelet sterility were decreased with increasing the level of SA and the percentage of filled grains/panicle were increased with increasing level of SA. The insect infestation was reduced with increasing level of SA to up to 1000 μM. The maximum grain yield (9.21 t/ha) and straw yield (9.22 t/ha) was found in the treatment T6 which was identical to T5. On the other hand, in all cases the lowest results were found in the control treatment. The result showed that grain yield of rice increased with increasing level of SA to up to 1000 μM (T6 treatment). Our results suggest that foliar spray of SA might be applied to increase the yield of hybrid rice in Bangladesh.Res. Agric., Livest. Fish.4(3): 157-164, December 2017


Author(s):  
Rijanto Hutasoit ◽  
Simon Ginting ◽  
Juniar Sirait ◽  
Andi Tarigan

The cultivation of mulberry as forages is scarce in Indonesian feeding system for ruminant production, although many studies have indicated  its nutritional potential as animal feed especially ruminants. This study was aimed to investigate the effects spacing of plant and cutting age on productivity and chemical composition of some species mulberry plants. The experiment was conducted in a randomized block design with factorial treatments. The factors species were (M. indica cv kanva, M. nigra, M. cathyana, and M. Multicaulis), the spacing of plants (1 x 0.5 m, 1 x 1 m and 1 x 1.5 m) and cutting ages (210, 240, and 270 days after planting). The results showed that species, M. multicaulis and M. cathyana are the highest growth, using a spacing of 1 x 0.5 m with cutting age 270 days after planting. Dry matter production highest (P < 0,05) in M. Cathyana at spacing of 1 x 0.5 with cutting age 270 days after planting. The ratio of leaves and stems of plants are affected by age, the highest proportions of leaf  is obtained at the cutting age of 210 days. Chemical composition were highest in M.multicaulis at the age of 270 days. The highest content of  organic matter (OM) were found in M.Kanva and not different with M. Nigra at the age of 270 day after planting. In treatment of cutting ages have no effect (P < 0.05) on the Crude protein (CP), ADF, NDF, lignin and tannin content. The average content of CP obtained gained 20.69%, 32.38% ADF, NDF 33.99%, 12.45% lignin and tannin 0.3%. Concluded that mulberry plants with a plant spacing of plant 1 x 0.5 and 270 days after plant have more advantages for use as animal feed.


2020 ◽  
Vol 7 (3) ◽  
pp. 184
Author(s):  
Bernadete Barek Koten ◽  
Yukendi A Sufmera ◽  
Agustinus Semang ◽  
Redempta Wea ◽  
Melkianus Dedimus Same Randu ◽  
...  

ABSTRAKArbila merupakan legume pakan yang jeraminya merupakan pakan hijauan yang berkualitas bagi ruminansia, dan produksi jeraminya ditentukan oleh kualitas tanah. Level bokashi yang ditambahkan mempengaruhi kualitas tanah, yang tentu berdampak pada produksi jerami arbila. Penelitian bertujuan untuk mengevaluasi produksi jerami arbila pasca panen akibat pemberian level bokashi yang berbeda. Penelitian tersebut telah dilaksanakan selama 5 bulan di Desa Noelbaki. Rancangan percobaan yang digunakan adalah rancangan acak kelompok (RAK) dengan 5 perlakuan dan 4 ulangan, terdiri atas P0 = tanpa bokashi (kontrol), P10 = penambahan bokashi 10 ton/ha, P20 = bokashi 20 ton/ha, P30 = bokashi 30 ton/ha, P40 = bokashi 40 ton/ha. Variabel yang diamati adalah  produksi bahan segar jerami (PBSJ) (ton/ha), produksi bahan kering jerami (PBKJ), produksi bahan organik jerami  (PBOJ) arbila. Data yang diperoleh dianalisis varians dan dilanjutkan dengan uji Duncan. Hasil analisis varians menunjukkan bahwa level pemberian pupuk bokashi berpengaruh sangat nyata (P<0,01) terhadap PBSJ arbila serta berpengaruh nyata (P<0,05) terhadap PBKJ dan PBOJ arbila. Berdasarkan hasil penelitian, diketahui rataan PBSJ arbila berkisar 0,46-2,52 ton/ha, PBKJ arbila berkisar 0,07-0,18 ton/ha, dan PBOJ arbila berkisar 0,04-0,16 ton/ha. Hasil uji Duncan menunjukkan bahwa nilai PBSJ, PBKJ dan PBOJ arbila tertinggi terdapat pada perlakuan P40. Disimpulkan bahwa semakin meningkatnya level bokashi Chromolaena dan feses sapi, produksi jerami arbila semakin tinggi. Level bokashi feses sapi dan Chromolaena terbaik adalah 40 ton/ha.Kata kunci: arbila, bokashi, jerami, hijauan ABSTRACTArbila’s straw is a quality feed for ruminants. Production of these straw is determined by soil quality. The level of bokashi added influences the quality of the soil and therefore influences the straw production. This research aimed to evaluate arbila’s straw production post-harvest in different levels of bokashi. This research was carried out for 5 months at Noelbaki. The experimental design used was a randomized block design (RBD) with 5 treatments and 4 replications consisting of P0 = without bokashi (control), P10 = addition of 10 tons of bokashi / ha, P20 = 20 tons of bokashi / ha, P30 = 30 tons of bokashi / ha, P40 = bokashi 40 tons / ha. The observed variables were the straw fresh weight production (SFW) (tons/ha), straw dry matter production (SDM) (tons/ha), straw organik matter production (SOM) (tons/ha). Data were analyzed for variance and continued with Duncan test. Analysis of variance showed that the level of bokashi fertilizer had a very significant effect (P <0.01) on SFW and significantly affected (P <0.05) SDM and SOM. The average SFW in this study ranged from 0.46 to 2.52 tons/ha, HDM ranges from 0.07 to 0.18 tons/ha, and SOM ranges from 0.04 to 0.16 tons/ha. Duncan's test shows that the highest SFW, SDM and SOM are found in P40. It was concluded that arbila’s straw production increases with the level of Chromolaena and cattle manure bokashi added. Highest production was shown in group with 40 ton/ha bokashi.Keywords: bokashi, forage, Phaseolus lunatus L, straw


2017 ◽  
Vol 47 (3) ◽  
Author(s):  
Luiz Antônio Zanão Júnior ◽  
Maristela Pereira Carvalho-Zanão ◽  
Natália Pereira ◽  
José Antônio Saraiva Grossi ◽  
Reginaldo Ferreira Santos

ABSTRACT: The production and quality of roses are influenced by fertilization management. The aim of this experiment was to evaluate the effects of doses of iron (Fe) in the production of potted rose bushes ( Rosa hybrida ). Treatments were based on five doses of Fe (0, 1, 3, 5 and 15mg kg-1) applied on the substrate, in a randomized block design with four replications. Seedlings presented two pairs of leaves and were individually transplanted into plastic pots (0.8dm3) containing commercial substrate. Each experimental plot consisted of a vase with a plant with two flower stalks. The following parameters were evaluated: number of leaves and flowers per flower stalk; dry matter production of roots, leaves and flowers; plant height and diameter and floral longevity. In addition, foliar levels of total chlorophyll and Fe were determined. Fertilization with Fe increases the production and quality of flowers of the rosebush cv. 'Shiny Terrazza' (r). Dose of Fe to be added to the substrate used in this study for maximum economic efficiency for this cultivar is 3.6mg kg-1.


2014 ◽  
Vol 34 (4) ◽  
pp. 738-745 ◽  
Author(s):  
Veridiana Z. de Mendonça ◽  
Luiz M. M. de Mello ◽  
Francisco C. B. L. Pereira ◽  
José O. da R. Silva ◽  
Élcio H. Yano

Corn cropping for silage, due to the plant material exportation, intercropping with forage provides greater ground cover and straw formation for the Direct Planting System (DPS) continuity. The objective of this study was to evaluate corn production for silage in DPS intercropped with four forages (Urochloa brizantha cv. Marandu, U. ruziziensis cv. Ruziziensis, Panicum maximum cv. Tanzânia and P. maximum cv. Áries). We applied three sowing methods (in row together with corn fertilizer; by no-till sowing simultaneously to corn sowing and at V4 corn stage) and corn without intercropping. The experiment was conducted in autumn/ winter of 2010, in Selvíria - MS, in a randomized block design in factorial arrangement (4 x 3 + 1) and 4 replications. For corn, we evaluated plant height, basal stem diameter, initial and final stand and silage production and for forage dry matter production. Morphological characteristics and corn yield were not affected by intercropping when compared to sole corn crop. Forage dry matter production sown in corn row with fertilizer is a highlight, which in addition to providing greater productivity, harnesses the operation during sowing.


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