Thumbnail Image

Thesis

Browse

20051
Reset filters
Subject: Plant Biochemistry × Author: H.Yogeeshappa × Start date: 1970 × Type: Thesis ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    ThesisItemOpen Access
    Yield and quality of grapes (cv. thompson seedless) in relation to soil fertility status of vineyards in Bijapur taluk of karnataka
    (UAS, Dharwad, 2005) H.Yogeeshappa; S.I.Tolanur
    Nutrient depletion has become more pronounced consequent to other exploitation of natural resources to meet the food requirement in view of an ever-increasing population. It is therefore important to examine the fertility status of soils from time to time. A systematic investigation was conducted on soil fertility status of the low and high yielding vineyards in Bijapur taluk. Sixty vineyards were surveyed during 2006-07. Out of 60, 30 vineyards were selected based on previous year yield data for the purpose of collecting soil and petiole samples. The vineyards which produced less than 10 tonnes per acre and those which produced more than 10 tonnes per acre were categorised as low yielding and high yielding vineyards, respectively. [ All the soils belong to clay in texture. The pH of soils was alkaline in reaction (8.19 – 8.50). The soils were non saline. The organic carbon content of the soils ranged from medium to high. The CEC of the soil ranged from 49.45 to 59.48 cmol (p+) kg-1. The available nitrogen content of the soils ranged from 164.20 to 231.71 kg ha-1. The available phosphorus content in the soils ranged from 18.64 to 35.89 kg ha-1. The available potassium content of the soil raged from 432.64 to 543.39 kg ha-1. The available sulphur content of the soils ranged from 22.81 to 35.32 kg ha-1. The soils were optimum in available micronutrients. The nutrients in the petiole were non-significant and positively correlated with yield except P and K at 45 days after April pruning. The average cane girth after April pruning (vigour of vine) was found more in case of high yielding vineyards than in low yielding vineyards. The average girth of fruiting shoot was also more in high yielding vineyards. The better management practices by the farmers ensure higher yields.