MANAGEMENT TECHNOLOGY FOR ADOPTION- 2020
RICE
- Cost effective weed management in DSR under puddled low land condition
Application of pre and early post emergence herbicide augmented broad spectrum weed control in puddled direct seeded rice. Pre emergence herbicide application of Pyrazosulfuron ethyl 10% WP @ 20 g/ha at 3 DAS + Early post emergence application of Bispyribac sodium 10% SC @ 25 g/ha at 2-3 leaf stage (20-25 DAS) effectively control the weeds and resulted higher weed control efficiency.
- Alternative crops for Kuruvai season a contingent plan in Canal irrigated limited water situation
Pre-monsoon sowing of Greengram (Co 8) for canal irrigated area where water is not released for irrigation for first season as contingent plan. It recorded higher yield, B:C ratio and higher water productivity in pre-monsoon sowing.
- Improvement of grain filling in rice by foliar spray of nutrients and growth promoters
Foliar application of 2% MAP + 1% KCl at heading and grain filling stages (or) 6-Benzylamino-purine (30 ppm) at heading and grain filling stages increases grain filling duration (25 to 27 days) and grain filling rate (1.11 to 1.19 mg/grain/day) in four varieties (ADT 49, ADT 53, CO 51 and CO 52) and also increase grain yield from 9 % to 17.7 %
COTTON
Foliar application of Mepiquat chloride @ 100 ppm (Commercial product: one litre/ha) at square formation and boll development stages for higher seed cotton yield and net return in cotton variety Co 17 under high density planting.
GROUNDNUT
- Crop establishment and suitable intercrop for semi-spreading groundnut under rainfed condition
Groundnut + cowpea @ 4:1 ratio under seed drill sowing with raised bed (120 cm) recorded higher GEY (1601 kg/ha), RUE (1.89 kg/ha-mm) and BCR (2.05).
MAIZE
- Evaluation of new chelated zinc and iron formulations for Maize crop
In Zn and Fe deficient soils, foliar spraying of 0.5% Zn citrate (9% Zn) + 1.0% Ferric citrate (10.9% Fe) thrice at 30, 40 and 50 DAS along with STCR based NPK registered 7.4 % higher mean grain yield (9458 kg/ha) than the existing recommendation of foliar spraying with 0.5% ZnSO4 + 1% FeSO4 + 0.1% citric acid (8806 kg/ha) besides higher grain Zn and Fe content, net income and B: C ratio.
PULSES
- Piloting pulse produce support system through ICT enabled services
Registered farmers had received 10 – 12 timely advisories during the crop period 3 to 5 days in advance thro’ their mobile to plan their farm activities and realized an increased return ranging from Rs.1900 to Rs.2800 through yield increase and cost reduction, while the non registered farmers could react only after the occurrence of extreme weather events. Hence, the “TNAU – AAS web cum Mobile App” may be recommended for adoption and may be popularized among the farming community to manage weather based risks and to maintain sustainability in crop production during aberrant weather.
SUGARCANE
- Sub surface drip fertigation in sugarcane under SSI system of planting
Sugarcane planting at 180 x 60 cm row and plant spacing as double side planting in 40 cm furrow width and irrigation at 100% PE with fertigation level of 125% RDF from 15 to 210 days after planting at weekly interval is found to be a promising technology to increase the productivity of sugarcane.
BANANA
- Drip fertigation studies in Banana
In banana, irrigation at 100% PE once in 3 days and fertigation once in 6 days from 15 to 300 days after planting with 100% RDF (200:35:330 g NPK/plant) as 50% P and K as basal and the remaining as water soluble fertilizer along with soil application of 25 Kg sulphur is found to be viable technology to get maximum yield in G9 banana.