scholarly journals Effect of different Weed Management Practices on Weed Dry Matter Accumulation and Weed Population in Chickpea (Cicer arietinum L.) and Lentil (Lens culinaris L.) Intercropping System

2021 ◽  
Vol 10 (4) ◽  
pp. 632-638
Author(s):  
Ashu Sandeep Menon
Keyword(s):  
Cicer Arietinum ◽  
Weed Management ◽  
Dry Matter ◽  
Lens Culinaris ◽  
Management Practices ◽  
Dry Matter Accumulation ◽  
Cicer Arietinum L ◽  
Weed Population

scholarly journals Effect of Weed Management Practices on Weed Dynamics, Growth, Yield and Yield Attributes of Rice (Oryza sativa L.)

2020 ◽  
pp. 40-52
Author(s):  
Preeti Chaudhary ◽  
. Vivek ◽  
R. K. Naresh ◽  
B. P. Dhyani ◽  
M. Sharath Chandra
Keyword(s):  
Weed Management ◽  
Management Practices ◽  
Sandy Loam ◽  
Block Design ◽  
Growth Parameter ◽  
Research Centre ◽  
Dry Matter Accumulation ◽  
Area Index ◽  
Yield Attributes ◽  
Weed Population

A field experiment was conducted on sandy loam soil at Crop Research Centre of Sardar Vallabhbhai Patel University of Agriculture & Technology, Meerut, U.P. during kharif (July –October), 2019 in randomised block design with three replications. The study comprised of ten different statistical treatments for weed management practices in transplanted rice and various observations were recorded during the crop growth period. The results indicated that the application of Pretilachlor (750 g a.i/ha) at 3 DAT + Penoxsulam (22 g a.i/ha) at 20 DAT significantly reduced the weed population and dry weight over weedy check. The highest plant height, number of tillers (m-2), dry matter accumulation, leaf area index, panicle length, filled grains, unfilled grains, higher protein content, 1000-grain weight and grain yield (38.80 q ha-1), were recorded with the application of Pretilachlor (750 g a.i/ha) at 3 DAT + Penoxsulam (22 g a.i/ha) at 20 DAT, which established itssuperiority over rest of the herbicidal treatments. Among weed management treatments, Pretilachlor (750 g a.i/ha) at 3 DAT + Penoxsulam (22 g a.i/ha) at 20 DAT (T8) found excellent to control weed population and increase growth parameter, yield attributes and crop productivity.

Efficacy of Pre and Post Emergence Application of Imazethapyr and its Ready Mix Herbicides on Growth, Weed Dynamics and Productivity of Chickpea (Cicer arietinum L.)

2021 ◽  
Author(s):  
Sheela Barla ◽  
R.R. Upasani
Keyword(s):  
Weed Management ◽  
Dry Matter ◽  
Yield Loss ◽  
Weed Competition ◽  
Maturity Stage ◽  
Dry Matter Accumulation ◽  
Initial Growth ◽  
Cicer Arietinum L ◽  
Weed Control Efficiency ◽  
Weed Dynamics

Background: Weeds are major constraints in chickpea production. This crop is highly susceptible to weed competition owing to slow initial growth thus weeds cause up to 75% yield loss. Methods: Treatments comprised of imazethapyr 50 g/ha as PE (pre emergence), imazethapyr 70 g/ha as PE, imazethapyr 50 g/ha as PoE (post emergence), imazethapyr 70g/ha as PoE, imazethapyr + imazamox ready mix (RM) 50 g/ha as PE, imazethapyr + imazamox (RM) 70 g/ha as PE, imazethapyr + imazamox (RM) 50 g/ha as PoE, imazethapyr + imazamox (RM)70 g/ha as PoE, pendimethalin 1 kg/ha PE, imazethapyr + pendimethalin (RM) 1 kg/ha PE, hoeing at 20 and 40 DAS and weedy check. Result: Application of imazethapyr + pendimethalin (RM) 1 kg/ha as pre emergence recorded maximum plant dry matter accumulation at 60, 90, 120 DAS and at maturity stage and also higher CGR at 60-90, 90-120 and120 DAS - maturity of crop. Application of imazethapyr + pendimethalin (RM) 1 kg/ha as pre emergence was most effective in producing higher seed yield (1749 kg/ha), weed control efficiency (87.28%), net return (` 77,136), reduced weed management index 5.15 and 3.90 at 30 and 60 DAS respectively.

scholarly journals Influence of different transplanting date and weed management practices on yield and quality of basmati rice (Pusa Basmati-1509)

2017 ◽  
Vol 9 (4) ◽  
pp. 1958-1961 ◽  
Author(s):  
Vikram Kumar ◽  
V. S. Hooda ◽  
D. P. Nandal ◽  
Sunil Kumar ◽  
Gaurendra Gupta
Keyword(s):  
Grain Yield ◽  
Weed Management ◽  
Dry Matter ◽  
Management Practices ◽  
Basmati Rice ◽  
Growth Stages ◽  
Dry Matter Accumulation ◽  
College Of Agriculture ◽  
Yield And Quality

A field experiment was conducted during kharif 2014 at students’ farm of Chaudhary Charan Singh Haryana Agricultural University, college of agriculture, Kaul (Kaithal). The experiment consisted of four transplanting dates (June 15, July 5, July 25 and August 15) in main plots and six weed control treatments in sub plots treatments consisted of pre-emergence application of pretilachlor, oxadiargyl alone and sequential application of pre and post emergence herbicides viz., pretilachlor fb bispyribac, oxadiargyl fb bispyribac, weed free check and unweeded check. Based on research investigation it was observed that early transplanting dates (June 15 and July 5) produced taller plant, higher tillers/m2 and crop dry matter accumulation at all growth stages. Early transplanting produced significantly higher number of effective tillers/m2 (263) along with higher number of filled grain/ panicle (85) than delayed planting (July 25 and August 15). The 1000-grain weight was not affected by time of transplanting. The highest grain yield (4363 kg/ha) was recorded under June 15 transplanting which was statistically at par to the grain yield (4058 kg/ha) obtained under July 5 transplanting. Among the weed management practices tried, weed free check resulted in the highest values of plant height (104.2 cm), tillers/m2 (305), crop dry matter accumulation (964 g/ m2), effective tillers/m2 (271), grains length (8.5 cm), filled grains/panicle (86.3) as well as grain (4516 kg/ha) and straw yield (5506 kg/ha) which were however, comparable to pre-emergence application of oxadiargyl followed by bispyribac-sodium applied at 25 DAT and pretilachlor followed by bispribac-sodium at 25DAT.

Effect of Integrated Nutrient Management Practices on Growth and Development of Hybrid Maize Cultivar HQPM 1 in Mid-Hills of Meghalaya

2017 ◽  
Vol 4 (03) ◽  
Author(s):  
SAMBORLANG K. WANNIANG ◽  
A. K. SINGH
Keyword(s):  
Dry Matter ◽  
Management Practices ◽  
Nutrient Management ◽  
Dry Matter Accumulation ◽  
Integrated Nutrient Management ◽  
Graduate Studies ◽  
Green Manuring ◽  
Maize Cultivar ◽  
Significant Difference ◽  
Hybrid Maize

A field experiment was conducted during kharif 2011 on experimental farm of the College of Post Graduate Studies (CAU–Imphal), Umiam (Meghalaya) to evaluate the effect of integration of green manuring, FYM and fertilizers as integrated nutrient management (INM) practices on growth and developmental behaviour of quality protein maize cultivar QPM 1. The data revealed that comparatively higher amount of primary nutrients were added in green manured maize plots in comparison to non green manured treatments. Green manuring also left a positive response on plant height, CGR, RGR leaf area, and dry matter accumulation in plants though the difference between green manured and non-green manured treatments was at par. Treatments 75 % RDF + 5 t FYM ha-1, 50 % RDF + 7.5 t FYM ha-1, 100 % RDF ha-1 and 75 % RDF + 2.5 t FYM ha-1 recorded significantly higher values of all the above said growth parameters over 50 % RDF + 5 t FYM ha-1 and control treatments. At all stages of observations, the maximum dry matter was associated with RDF (recommended doses of fertilizers) which was at par with 75 % RDF + 5 t FYM ha-1, but significantly higher over the plant dry weight recorded from all remaining treatments. A Significant difference in CGR at 30 – 60 and 60 – 90 DAS stage and in RGR at 90 DAS - harvest stage was observed due to various combinations of recommended dose of fertilizer with different doses of FYM. Number of days taken to attain the stages of 50% tasselling, silking and maturity did not differ significantly due to green manuring. However, treatment 75 % RDF + 5 t FYM ha-1 took significantly lesser number of days for these stages than other treatment combinations. The superiority of the treatment 75 % RDF + 5 t FYM ha-1 indicated a possibility of substituting 25% of RDF with 5 t FYM ha-1 without any loss in dry matter accumulation in plants of the quality protein hybrid maize in mid-hill ecosystems of Meghalaya.

scholarly journals Preliminary Study on Effect of Early Defoliation on Dry Matter Accumulation and Storage of Reserves on ‘Abbé Fétel’ Pear Trees

HortScience ◽  
2019 ◽  
Vol 54 (12) ◽  
pp. 2169-2177 ◽  
Author(s):  
Karen Mesa ◽  
Sara Serra ◽  
Andrea Masia ◽  
Federico Gagliardi ◽  
Daniele Bucci ◽  
...  
Keyword(s):  
Dry Matter ◽  
Management Practices ◽  
Soluble Sugar ◽  
Soluble Sugars ◽  
Growing Season ◽  
Soluble Carbohydrates ◽  
Soluble Carbohydrate ◽  
Sink Strength ◽  
Dry Matter Accumulation ◽  
Pear Trees

Annual accumulation of starch is affected by carbon reserves stored in the organs during the growing season and is controlled mainly by sink strength gradients within the tree. However, unfavorable environmental conditions (e.g., hail events) or application of management practices (e.g., defoliation to enhance overcolor in bicolor apple) could influence the allocation of storage carbohydrates. This preliminary research was conducted to determine the effects of early defoliation on the dry matter, starch, and soluble carbohydrate dynamics in woody organs, roots, and mixed buds classified by age and two levels of crop-load for one growing season in ‘Abbé Fétel’ pear trees (Oct. 2012 to mid-Jan. 2013 in the northern hemisphere). Regardless of the organs evaluated (woody organs, roots, and mixed buds), an increase of soluble carbohydrate concentration was observed in these organs in the period between after harvest (October) and January (dormancy period). Among all organs, woody short-old spurs showed the highest increase (+93.5%) in soluble sugars. With respect to starch, woody organs showed a clear trend of decreasing in concentration between October and January. In this case, short-old spurs showed the smallest decline in starch concentrations, only 6.5%, whereas in other tree organs starch decreased by 34.5%. After harvest (October), leaves showed substantially higher starch and soluble sugar concentrations in trees with lower crop-loads. These results confirm that in the period between October and January, dynamic interconversions between starch and soluble carbohydrates occur at varying magnitudes among organs in pear trees.

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