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|Authors:||Pawar, Balwant Gopalrao|
|Title:||STUDIES ON THE EFFICACY OF SOME GROWTH SUBSTANCES IN PREVENTION OF SEED STALK LODGING IN ONION(Alliuin cepa, L.)cv. N-2-4-1|
|Publisher:||MAHATMA PHULE KRISHI VIDYAPEETH RAHURl, 418 722 DIST.- AHMEDNAGAR, Maharashtra State (India|
|Abstract:||The present investigations "Studies on the efficacy of some growth substances in prevention of seed stalk lodging in onion [Allium cepa L.] cv. N-2—4-1" were undertaken to study the physiological aspects such as growth characters, yield, yield attributes and quality of onion seed. The experiment was conducted in factorial randomised block design [F.R.B.D]. With three replicationS at the Instructional-cum-Research Orchard, Department of Horticulture, Mahatma Phule Krishi Vidyapeeth, Rahuri, during, the rabi season of 1992-93. The spraying treatments comprised of ethephon and CCC [2500, 5000 and 7500 ppm] each at 25 per cent and 50 per cent visible seed stalk stage respectively and one control. The observations on different growth characters such as number of leaves, height of seed stalk, girth of seed stalk, total number of seed stalks, lodged seed stalks, diameter of umbel, average number of floretes per umfole, number of seed setting floretes per umbel, seed yield by weight and number per plant, seed yield per plot per hectare, 1000-seed weight, percentage of floating seed and germination percentage were recorded at the various growth stages. The study revealed that the sprays.fethephon and CCC on onion plants reduced the seed stalk height and increased its girth. Ethepon 7500 ppm applied at 25 per cent seed stalk emergence stage found to be more effective than CCC. Both the growth substances reduced the count of florets but increased the count of seed setting florets. Thus The seed yield both by weight and number i with increasing concentrations. Among two growth substnces, ethephon resulted in more yield per plot and per hectare both by count and weight than CCC. So far as seed germination is considered, both the growth substances were equally better.|
|Appears in Collections:||Thesis|
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