Effect of Integrated Weed Management on Yield Attributes, Yield and Economics of Rainfed Pigeon Pea (Cajanus cajan (L.) Millsp)

2017 ◽  
Vol 5 (5) ◽  
pp. 1384-1388
Author(s):  
Ved Prakash Singh ◽  
Author(s):  
Biman De ◽  
Subrata Ray ◽  
Partha Das ◽  
Sujoy Hazari

Pigeonpea is cultivated as a major source of protein for poor farmers with reduced yields. The low yield of pigeonpea is due to faulty agro techniques. The present investigation was conducted to see the effect of integrated agro-techniques on growth and growth attributes of pigeonpea and designed with block randomization having eight treatments viz., integrated nutrient management (INM), integrated weed management (IWM), integrated pest management (IPM) and its combos at AICRP experimental farm, College of Agriculture Tripura. Growth and yield attributes differed significantly due to integrated agro-techniques with poor weed population in IWM. The net come was highest in INM+IWM+IPM (Rs. 49243.85 and Rs. 47757.63). Results revealed that INM+IWM+IPM yielded higher followed by INM+IWM however each of them was statistically at par throughout the study. Economics led INM+IWM as best treatment than the combination of 3 agro-techniques, where additional price occurred.


2004 ◽  
Vol 61 (1) ◽  
pp. 21-26 ◽  
Author(s):  
Francisco José Severino ◽  
Pedro Jacob Christoffoleti

Using a smother crop is thought to suppress weed density and to add other beneficial effects in sustainable agricultural systems. Weed suppression ought to be considered an essential component of integrated weed management. However, very little is known about the effects of green manure plants on weeds. This study evaluated the influence of three green manure species on weed suppression and selectivity of herbicides. A field experiment was designed to determine the effect of the green manure species Crotalaria juncea, Arachis pintoi and pigeon pea on the weeds Brachiaria decumbens, guineagrass and hairy beggarticks, and on the natural weed infestation in the inter rows area of an avocado orchard. The weed species were suppressed differently by each green manure species. Soil samples collected from the field experiment presented a residual effect, of at least 30 d, in suppressing weed seed bank recruitment; this residual effect was caused by the residues of the green manure present in the soil. When the green manure was incorporated into the top 5 cm of soil or left on the surface, in a greenhouse experiment, the emergence of weed seeds was significantly inhibited, depending on the species, and on the amount and depth of green manure incorporation. Greenhouse experiments indicate that pre-emergence herbicides cause lower phytotoxicity than post-emergence Arachis pintoi. Smother crops using green manure species, when well established in an area, provide additional weed control to the cropping system and are effective and valuable tools in integrated weed management.


Author(s):  
Saroj Bala ◽  
Rajni Devi ◽  
Veena Khanna

The latest soil management scenario is occupied by destructive chemical fertilizers, which is a serious risk to both human health as well as to the environment. Advantageous microbes present in soil are used as a biofertilizers for a promising role in sustainable agriculture. Pigeon pea (Cajanus cajan L.) is a primitive protein rich leguminous pulse in India. Thirty-five isolates from rhizospheric soil samples were collected from twelve different locations of Punjab (India). Morphological and biochemical characterization for selection of potential plant growth promoting traits with antifungal properties was undertaken. Most of the inoculated seeds with rhizoisolates evolved a significant increase in growth parameters of pigeon pea as compared to uninoculated seeds, both in vitro and in vivo conditions. Plant growth promoting rhizobacterias (PGPRs) are environmentally safe as they lead to increased production and resistance against diseases of crops.


Author(s):  
Yadwinder Singh ◽  
Kanwaljit Singh

Background: To study effect of various spacing and weed management practices on weed control, growth parameter, yield and yield attributes of pigeon pea variety Pusa Arhar-16, field experiments were conducted at Student’s Research Farm, Khalsa College Amritsar, Punjab, India during kharif season of 2019-20.Methods: The experiment was laid out in Split plot design with three replications. The treatments comprised of four different spacing i.e. S1 (30×10 cm), S2 (30×15 cm), S3 (40×15 cm) and S4 (50×25 cm) which were considered as main plot treatments and three weed management practices W1 (weedy check), W2 (pendimethalin @ 1.5 kg a.i. ha-1 at 1DAS) and W3 (rice straw mulch) as sub-plot treatments.Result: It was found that maximum plant height (218.2 cm) and highest leaf area index (2.104) was recorded in treatment S1 (30×10 cm) whereas treatment S4 (50×25 cm) was superior in rest of growth parameters viz. maximum crop growth rate (0.85 gram per plant per day), number of primary branches (18.2 per plant) and number of secondary branches (13.8 per plant). Among yield and yield attributes, spacing S1 (30×10 cm) showed maximum grain yield (16.29 q ha-1) and stover yield (49.29 q ha-1) whereas, maximum number of pods per plant (154.6), pod length (4.83 cm), number of seeds per pod (3.90) and 100-seed weight (7.14 grams) were recorded in spacing S4 (50×25 cm). The weed management treatments showed non-significant effect on growth and yield parameters due to weed suppressing ability of the crop. which might be due to weed suppressing ability of the crop. It may be concluded that pigeon pea cultivar Pusa Arhar-16 performed better in narrower spacing of 30×10 cm due to its dwarf nature and it also showed good smothering effect on the weeds due to its smothering effect.


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