scholarly journals Economics of Direct Seeded Rice and Transplanted Rice Influenced by Tillage and Weed Management Practices under Rice - Maize Cropping System Based on Conservation Agriculture

2019 ◽  
Vol 8 (09) ◽  
pp. 1106-1119
Author(s):  
Sakshi Bajaj ◽  
M. C. Bhambri ◽  
G. K. Shrivastava
Keyword(s):  
Weed Management ◽  
Management Practices ◽  
Cropping System ◽  
Conservation Agriculture ◽  
Transplanted Rice ◽  
Direct Seeded

scholarly journals Agricultural Innovation and Sustainable Development: A Case Study of Rice–Wheat Cropping Systems in South Asia

2021 ◽  
Vol 13 (4) ◽  
pp. 1965
Author(s):  
Aman Ullah ◽  
Ahmad Nawaz ◽  
Muhammad Farooq ◽  
Kadambot H. M. Siddique
Keyword(s):  
South Asia ◽  
Precision Agriculture ◽  
Weed Management ◽  
Crop Yields ◽  
Cropping Systems ◽  
Cropping System ◽  
Climatic Conditions ◽  
Transplanted Rice ◽  
Direct Seeded ◽  
Rice Residues

The rice–wheat cropping system is the main food bowl in Asia, feeding billions across the globe. However, the productivity and long-term sustainability of this system are threatened by stagnant crop yields and greenhouse gas emissions from flooded rice production. The negative environmental consequences of excessive nitrogen fertilizer use are further exacerbating the situation, along with the high labor and water requirements of transplanted rice. Residue burning in rice has also severe environmental concerns. Under these circumstances, many farmers in South Asia have shifted from transplanted rice to direct-seeded rice and reported water and labor savings and reduced methane emissions. There is a need for opting the precision agriculture techniques for the sustainable management of nutrients. Allelopathic crops could be useful in the rotation for weed management, the major yield-reducing factor in direct-seeded rice. Legume incorporation might be a viable option for improving soil health. As governments in South Asia have imposed a strict ban on the burning of rice residues, the use of rice-specific harvesters might be a pragmatic option to manage rice residues with yield and premium advantage. However, the soil/climatic conditions and farmer socio-economic conditions must be considered while promoting these technologies in rice-wheat system in South Asia.

scholarly journals Effect of Row Spacing and Weed Management Practices on the Performance of Aerobic Rice

2019 ◽  
Vol 52 (1) ◽  
pp. 17-25
Author(s):  
M. Ali ◽  
H.M.U. Farooq ◽  
S. Sattar ◽  
T. Farooq ◽  
I. Bashir
Keyword(s):  
Weed Management ◽  
Management Practices ◽  
Block Design ◽  
Rice Variety ◽  
Dry Weight ◽  
Research Area ◽  
Row Spacing ◽  
Aerobic Rice ◽  
Transplanted Rice ◽  
Direct Seeded

Abstract Direct-seeded rice alternative to transplanted rice system is less labor intensive, easier to plant, and consume less water. The advantages of direct-seeded rice have been proved by many research workers, but yet it is not very much adapted by farmers. Weeds reduce cost effectiveness of direct-seeded rice. A study was conducted to evaluate the effect of different row spacing and weed management practices on the performance of aerobic rice at Agronomic Research Area, University of Agriculture, Faisalabad, during summer season of 2013. Fine rice variety ‘Super Basmati’ was used for experiment in a randomized complete block design with factorial arrangements with three replications. Hand drill sowing with row spacing comprised 15 cm, 22.5 cm, and 30 cm was practiced. Weed scouting hoeing (hand pulling is weed free treatment for comparison with the others and hoeing is a type of mechanical weeding) and pre-emergence herbicide, followed by post-emergence herbicide, were the weed management practices. Weeds data and rice yield parameters were measured. Maximum reduction in weed density (86%) and weed dry weight (79%) was recorded for pre-emergence, followed by for post-emergence herbicide in crop sown at 15 cm row spacing.

scholarly journals Weed Dynamics and Productivity of Direct Wet Seeded Rice under Different Weed Management Practices

2020 ◽  
Author(s):  
M. Vasantha Kokilam ◽  
S. Rathika ◽  
T. Ramesh ◽  
M. Baskar
Keyword(s):  
Weed Management ◽  
Management Practices ◽  
Wide Spectrum ◽  
Dry Weight ◽  
Yield Attributes ◽  
Weed Density ◽  
Transplanted Rice ◽  
Direct Seeded ◽  
Weed Dynamics ◽  
Hand Weeding

Background: Weeds are the major biotic constraint to reduce the rice productivity in direct wet seeded rice. Weed infestation and competition are severe in direct wet seeded rice as compared to transplanted rice, because of the simultaneous growth of both crops and weeds. The yield loss due to weeds varies from 40 to 100 per cent in direct seeded rice. Use of herbicides either singly or in combination with manual or mechanical weeding in puddled direct seeded rice has been highlighted by several workers. Use of alternative herbicides with wide spectrum control of the weeds in direct seeded puddled rice is the need of the present time. The present study aimed to evaluate different weed management practices in direct wet seeded rice under sodic soil.Methods: A field experiment was conducted during Samba season (Rabi) 2016-17. to evaluate the weed management practices in direct wet seeded rice under sodic soil. The treatments comprised of different combination of weed management practices viz., pre emergence, early post emergence herbicides, mechanical weeding and hand weeding twice were tested. Total weed density and weed dry weight, weed control efficiency, yield parameters and yield of rice were recorded. Result: Among the different weed management practices, the lowest total weed density, total weed dry weight and higher WCE, yield attributes, grain and straw yields were registered under application of PE pyrazosulfuron ethyl 25 g/ha fb EPOE bispyribac sodium 25 g/ha. This was followed by application of PE pretilachlor 0.75 kg/ha fb EPOE bispyribac sodium 25 g/ha. 

Performance of direct-seeded rice under different nutrient and weed management practices

2021 ◽  
Vol 53 (2) ◽  
pp. 135-141
Author(s):  
Sheela Barla ◽  
R.R. Upasani ◽  
Alfa Malika Beck
Keyword(s):  
Weed Management ◽  
Management Practices ◽  
Direct Seeded

Residual Effect of Weed Management Practices Executed in Preceding Maize on Succeeding Greengram

2021 ◽  
Author(s):  
B. Sandhya Rani ◽  
V. Chandrika ◽  
G. Prabhakara Reddy ◽  
P. Sudhakar ◽  
K.V. Nagamadhuri ◽  
...  
Keyword(s):  
Weed Management ◽  
Management Practices ◽  
Block Design ◽  
Residual Effect ◽  
Cropping System ◽  
Dry Weight ◽  
Microbial Count ◽  
Yield Attributes ◽  
Randomized Block Design ◽  
Weed Infestation

Background: Maize followed by summer pulses is the emerging cropping system in many places in India. Herbicides are the efficient tools for checking weed infestation and their usage is increasing throughout the globe due to increased labour cost and quick weed control. Some herbicides do not degrade quickly and may remain in the soil for weeks, months or years after application and may inhibit the growth of succeeding crops. Methods: Field experiment was conducted in a randomized block design (RBD) during rabi and summer seasons of 2017-18 and 2018-19 to know the residual effect of different herbicides applied in maize on succeeding greengram. Result: The present study revealed that lower density and dry weight of total weeds and higher yield attributes and yield was recorded with the practice of adopting two hand weedings at 15 and 30 DAS, which was however, at par with atrazine 1.0 kg ha-1 as PE fb one HW at 30 DAS, atrazine 1.0 kg ha-1 as PE fb topramezone 30 g ha-1 as PoE and atrazine 1.0 kg ha-1 as PE fb tembotrione 120 g ha-1 as PoE, without any significant disparity among them. Herbicides applied in maize did not alter statistically the enzyme activity and microbial count in the soil at harvest of succeeding greeengram. 

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