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Abstract
The crop nutrient management has a well defined effect on the productivity of legumes. While considering all macronutrients, potassium has a key role in increasing the grain yield due to translocation of nutrients. The research trial was carried out in field to examine the grain yield of guar under variable rates of potassium application and varieties at Agricultural Research Station, Bahawalpur during the years 2017 and 2018. Four different potassium levels were applied i.e. (T1) 0, (T2) 30, (T3) 60, (T4) 90 kg ha-1 . Two varieties (BR-2017 and S-5885) were planted. Significant differences among the potassium application rates and varieties were observed regarding growth, yield and yield parameters. The highest plant height (99 cm) with the variety BR-2017 in T4 (90 kg ha-1 ) while more no. of branches plant -1 (7.10) and germination percentage (85.00) were obtained where potassium was applied @ 60 kg ha-1with the variety S-5885 which stand superior than BR-2017 considering the same growth parameters. The maximum grain yield (2830 kg ha-1 ) was recorded with the application of potassium at the rate of 60 kg ha-1 following potassium application at the rate of 30 kg ha-1 (2790 kg ha-1 ) in S-5885. The application of potassium significantly increased the grain yield up to 60 kg ha-1 but decreased with further increase in the rate of potassium application.

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Muhammad Imran Akram, Lal Hussain Akhtar, Rashid Minhas, Muhammad Azeem Ur Rahman Khalid, Muhammad Shah Jahan Bukhari, Muhammad Zubair, Rahmat Ullah. (2019) GROWTH, YIELD AND YIELD ATTRIBUTES AS INFLUENCED BY VARIABLE RATES OF POTASSIUM APPLICATION AND VARIETIES UNDER IRRIGATED CONDITIONS OF BAHAWALPUR, , Volume 16, Issue 4.
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International Journal of Biology and Biotechnology
Volume
Volume 16
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