Effect of Trichoderma Applied with Different Sulfur Levels on Yield and Sulfur Uptake by Onion (Allium cepa L.)
Effect of Trichoderma Applied with Different Sulfur Levels on Yield and Sulfur Uptake by Onion (Allium cepa L.)
Faheem Akbar1, Naveed Ahmed4*, Maria Mussarat1, Imtiaz Ahmed4, Dost Muhammad1, Toseef Ahmad2, Muhammad Afaq Akbar1, Shehryar Rafique3, Seemab Ali4, Sohail Aslam4, Basharat Hussain Shah4, Fayaz Ahmad4 and Muhammad Abbas Khan4
ABSTRACT
In 2022, a field trial was carried out to investigate “Effect of trichoderma applied with different sulfur levels on yield and sulfur uptake by onion (Allium cepa L.)”. The field trial was arranged in split plot design over randomized complete block design in which four levels of trichoderma i.e. (0, 1.5, 3 and 6 kg.ha-1) were placed in main plots while five different levels of sulfur i.e.(0,25,50,75 and 100 kg.ha-1) were used on subplots. The results indicated that addition of both trichoderma and sulfur considerably improved onion plant height, leaf area, bulb weight, fresh yield and as well as sulfur contents in onion bulbs and phosphorous concentration in onion leaves. When the data were averaged over trichoderma levels, these parameters showed linear increases with sulfur levels up to 50 kg ha-1 and then remained unchanged or showed declining trend with further increase in sulphur levels. The mean onion fresh bulb yield increased from 14.11 t ha-1 o 18.91 t ha-1 with 50kg.ha-1 sulphur. Similarly, application of 3kg.ha-1 trichoderma seemed to be optimum level as further increases in trichoderma did not show further increases in yield or growth parameters of onion. However, the sulfur and Phosphorus contents in soil were more in treatments receiving higher levels of Sulfur and trichoderma but the total uptake was of sulphur and phosphorus were higher in treatments receiving 50.kg sulphur ha-1 along with 3.kg trichoderma ha-1. These results suggested that addition of trichoderma (3kg.ha-1) and sulfur (50kg.ha-1) seemed to be more effective in growth and yield contributing characteristics of onion and hence suggested for higher production of onion under the agro-climatic condition of Mansehra, Khyber Pakhtunkhwa.
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