scholarly journals Effect of Seedling Age and Weed Management on Growth and Yield of Transplanted Rice (Sakha 106 cv).

2019 ◽  
Vol 8 (1) ◽  
pp. 23-30
Author(s):  
El-Ghandor, A. M. A. A. M. Khozimy
Keyword(s):  
Weed Management ◽  
Growth And Yield ◽  
Seedling Age ◽  
Transplanted Rice

scholarly journals Response of Aqueous Extract of Botanical Herbicides on the Performance of Transplanted Rice during Boro Season

2020 ◽  
pp. 50-57
Author(s):  
Chandan Karmakar ◽  
Poulomi Nandy ◽  
Dibyendu Mondal ◽  
Anannya Ghosh ◽  
Ratikanta Ghosh
Keyword(s):  
Weed Management ◽  
Block Design ◽  
Tectona Grandis ◽  
Growth And Yield ◽  
Organic Chemical ◽  
Cost Ratio ◽  
Rice Productivity ◽  
Benefit Cost Ratio ◽  
Transplanted Rice ◽  
Bambusa Vulgaris

A field experiment was conducted in humid sub-tropics of West Bengal at the Instructional Farm, Jaguli of Bidhan Chandra Krishi Viswavidyalaya (BCKV), Nadia, India during 2016-17 to study some growth and yield parameters, also the economic advantages of various weed management treatments of summer transplanted paddy. The experiment was conducted with 8 treatments [T1- & T2 - Pre–emergence (PE) sole aqueous organic botanical extracts (AOBE) of Tectona grandis & Bambusa vulgaris respectively @ 100 mL/L water; T3 - PE sole synthetic organic chemical herbicides (SOCH) Pretilachlor 30.7 EC @ 500 g/ha;T4 – PE mixture of AOBE of Bambusa vulgaris & Tectona grandis @ 100 mL/L water; T5 – PE mixture of AOBE of Tectona grandis @ 100 mL/L water & SOCH Pretilachlor 30.7 EC @ 500 g/ha; T6 -PE mixture of AOBE Bambusa vulgaris of @ 100 mL/L water & SOCH Pretilachlor 30.7 EC @ 500 g/ha; T7 – Hand weeding (HW) at 25 & 45 days after transplanting (DAT) and T8 – Weedy check with three replications following randomised block design (RBD). The results revealed that the treatments T7 recorded the maximum biological yield (grain – 4.76 & straw 5.95 t/ha) and was statistically at par with the mixture of botanical and chemical treatments (T5 - 4.35 and 5.52 t/ha respectively) and T6 - 4.42 and 5.54 t/ha, respectively). The T6 recorded the highest benefit – cost ratio (BCR) value of 2.41 followed by T5 with 2.38. But in case of treatment T7, maximum cost of cultivation was incurred over all treatments due to higher expenditure on labour wages for that reason BCR was comparatively lower (2.02) and the lowest BCR was obtained against weedy check (T8) 1.85. Therefore, considering the crop growth, rice productivity, economics and farmers‟ easy availability the mixture treatments of AOBE Bamboosa vulgaris or Tectona grandis with SOCH Pretilachlor may be the best option and is an alternative to traditional HW treatment for increasing rice productivity through ecosafe weed management in transplanted paddy.

scholarly journals Growth and yield of transplanted rice as affected by different cultivars and weed management practices

2016 ◽  
Vol 8 (3) ◽  
pp. 1462-1466
Author(s):  
Sunil Mandi ◽  
Eajaz Ahmad Dar ◽  
Ashim Datta ◽  
Ram Pratap Singh ◽  
Manoj Kumar Singh
Keyword(s):  
Weed Management ◽  
Management Practices ◽  
Growth And Yield ◽  
Yield Potential ◽  
Dry Matter Accumulation ◽  
Rice Cultivars ◽  
Straw Yield ◽  
Transplanted Rice ◽  
To Come ◽  
Hand Weeding

An experiment was conducted to study the competitive ability of rice cultivars in different weed management practices in transplanted rice. Five cultivars viz. BPT-5204, Malviya 36, HUBR2-1, Swarna and Adamchini were tested for three weed management practices viz. Hand weeding, Bispyribac-sodium@25g ha-1 and Weedy check. Among the different cultivars tested, the Swarna proved to be the best selection in producing higher grain (4.6 t ha-1) and straw yield (5 t ha-1) as well as harvest index (44.4%) due to more no. of tillers hill-1, dry matter accumulation, no. of panicles hill-1, no. of grains/panicle and test weight (20.3 g). The grain and straw yield in Swarnawere 130 and 43% higher than the lowest yielding cultivar Adamchini respectively. The best weed control was achieved by hand weeding thrice at 25, 55 and 85 DAT. The grain yield was 58 and 27 % higher through hand weeding than that of weedy check and Bispyribac-sodium applied treatment, respectively. To examine the performance of different rice cultivars in terms of growth and yield potential, evaluation of these cultivars is necessary with different weed management practices. Therefore, release of best weed suppressive rice cultivars for the farmers is important for improving the productivity as well as reduced cost of production for feeding the ever growing population of the country in the year to come.

IMPACT OF WHEAT ESTABLISHMENT METHODS AND WEED MANAGEMENT PRACTICES ON WEED FLORA, YIELD AND NUTRIENT UPTAKE OF WHEAT IN RICE-WHEAT CROPPING SYSTEM

2019 ◽  
Vol 6 (02) ◽  
Author(s):  
MOHAN SINGH ◽  
OMBIR SINGH ◽  
ROHITASAV SINGH
Keyword(s):  
Nutrient Uptake ◽  
Weed Management ◽  
Conventional Tillage ◽  
Research Centre ◽  
Zero Tillage ◽  
Phalaris Minor ◽  
Weed Population ◽  
Metsulfuron Methyl ◽  
Transplanted Rice ◽  
Weed Flora

A field experiment was conducted at the Crop Research Centre of Govind Ballabh Pant University of Agriculture and Technology Pantnagar, Udham Singh Nagar during continuous two years to study the weed flora, yield and nutrient uptake of wheat (Triticum aestivum L.) under different wheat establishment methods in main plots and seven weed management in sub plots. Phalaris minor was the most dominant weed at 60 DAS contributed 55.0 per cent of total weed population. Melilotusindica was the major non grassy weeds in wheat which contributed 11 per cent to total weed population during respective years. Sowing of wheat with zero tillage significantly reduced the Phalaris minor density as compared to conventionally tilled wheat after transplanted rice, 60 per cent Phalaris minor emerged from 0-3 cm in reduced and conventional tillage where as in zero tillage after transplanted rice there was 55 per cent emergence from 0-3 cm layer.The highest grain yield was obtained in two hand weedings done at 30 and 60 DAS and was at par with Isoproturon 1.0 kg ha-1 + Metsulfuron methyl 4 g ha-1 at 30 DAS and Clodinafop – Propargyl 60 g ha-1 at 30 DAS fb. Metsulfuron methyl 4 g ha-1 at 37 DAS. Zero tillage resulted in significantly higher uptake of NPK by wheat plants as compared to conventional tillage, whereas reduced tillage recorded minimum NPK, which was significantly lower over the other treatments of wheat establishment methods.

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