Effect Of Nitrogen Fertilizer On The Duration Of Weed Interference In Sweetpotato (Ipomoea Batatas [L.] Lam) On An Ultisol At Umudike, South-Eastern Nigeria.

KORIEOCHA DAVIDSON SAMUEL | 70 pages (14776 words) | Projects

ABSTRACT

 Field studies were conducted at the Research Farm of the National Root Crops Research Institute (NRCRI) Umudike, in South-eastern Nigeria in the 2005 and 2006 cropping seasons, to investigate the effect of nitrogen fertilizer on the duration of weed interference in sweet potato (Ipornoea batatas) on an ultisol at Umudike, South-eastern Nigeria. The experiment was set up as a split plot in a Randomized Complete Block Design (RCBD), using three replications. Sweet potato was planted at 100x30 cm on the crest of well prepared ridges. The main plot treatments consisted of three rates of nitrogen fertilizer, namely 0, 60 and 90 kg N/ha applied as Urea. The sub- plot treatments consisted of 10 levels of duration of weed interference before weed removal, starting from 0 (weed-free), 1 ,2 , 3 , 4 , 5 , 6, 7 and 8 weeks of weed interference and unweeded treatments. Data on weed density, weed dry matter were collected using two 1 m x 1 m quadrats. Leaf area and vine length were measured by using meter rule. Yield and yield components were collected by 50 kg weighing balance. Data collected were subjected to analysis of variance .Means separation were carried out using standard error of difference .The results obtained over the two years indicate that sweet potato produced optimum total yield, weight of saleable (marketable) roots and total number of roots at 60 kg N/ha. On the other hand, plots with no fertilizer application significantly (p

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APA

KORIEOCHA, S (2021). Effect Of Nitrogen Fertilizer On The Duration Of Weed Interference In Sweetpotato (Ipomoea Batatas [L.] Lam) On An Ultisol At Umudike, South-Eastern Nigeria.. Repository.mouau.edu.ng: Retrieved Mar 28, 2024, from https://repository.mouau.edu.ng/work/view/effect-of-nitrogen-fertilizer-on-the-duration-of-weed-interference-in-sweetpotato-ipomoea-batatas-%5Bl%5D-lam-on-an-ultisol-at-umudike-south-eastern-nigeria-7-2

MLA 8th

SAMUEL, KORIEOCHA. "Effect Of Nitrogen Fertilizer On The Duration Of Weed Interference In Sweetpotato (Ipomoea Batatas [L.] Lam) On An Ultisol At Umudike, South-Eastern Nigeria." Repository.mouau.edu.ng. Repository.mouau.edu.ng, 08 Nov. 2021, https://repository.mouau.edu.ng/work/view/effect-of-nitrogen-fertilizer-on-the-duration-of-weed-interference-in-sweetpotato-ipomoea-batatas-%5Bl%5D-lam-on-an-ultisol-at-umudike-south-eastern-nigeria-7-2. Accessed 28 Mar. 2024.

MLA7

SAMUEL, KORIEOCHA. "Effect Of Nitrogen Fertilizer On The Duration Of Weed Interference In Sweetpotato (Ipomoea Batatas [L.] Lam) On An Ultisol At Umudike, South-Eastern Nigeria.". Repository.mouau.edu.ng, Repository.mouau.edu.ng, 08 Nov. 2021. Web. 28 Mar. 2024. < https://repository.mouau.edu.ng/work/view/effect-of-nitrogen-fertilizer-on-the-duration-of-weed-interference-in-sweetpotato-ipomoea-batatas-%5Bl%5D-lam-on-an-ultisol-at-umudike-south-eastern-nigeria-7-2 >.

Chicago

SAMUEL, KORIEOCHA. "Effect Of Nitrogen Fertilizer On The Duration Of Weed Interference In Sweetpotato (Ipomoea Batatas [L.] Lam) On An Ultisol At Umudike, South-Eastern Nigeria." Repository.mouau.edu.ng (2021). Accessed 28 Mar. 2024. https://repository.mouau.edu.ng/work/view/effect-of-nitrogen-fertilizer-on-the-duration-of-weed-interference-in-sweetpotato-ipomoea-batatas-%5Bl%5D-lam-on-an-ultisol-at-umudike-south-eastern-nigeria-7-2

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