Normal view MARC view ISBD view

Effect of mineral and biological nitrogen fertilization on Thompson seedless grape transplants [electronic resource]: II. effect on leaf mineral content.

By:

Shawky, I

Contributor(s):

Language: English Summary language: Arabic Description: p.1347-1369Other title:

تأثير التسميد النتروجيني المعدني و الحيوي علي شتلات العنب البناتي صنف طومسون سيدلس: II- التأثير علي المحتوى المعدني في الأوراق [Added title page title]

Uniform titles:

Annals of agricultural science, Moshtohor, 2004 v.42 (3) [electronic resource].

Subject(s):

Online resources:

Full Text Article

In: Annals of Agricultural Science, Moshtohor 2005.v.43(1)Summary: A pot experiment was carried out in 200 1 and 2002 seasons on Thompson Seedless grape transplants to study the effect of two sources of nitrogen fertilizers (mineral and biological) on leaf mineral content of transplants. The experiment included three levels of mineral nitrogen (MI =zero, M2=5 and M3=10g N/plant/year) and four levels of biological nitrogen (B.=zero, B2=50, B3= 100 and B4=200ml) of liquid culture of free living nitrogen fixation bacteria "Azotobacter chroococcum". Thus, the study is a factorial experiment in a randomized complete block design. Generally in both the two seasons levels of mineral and biological nitrogen affected mineral content in leaves (blades & petioles) and the promising levels were (M2) from mineral and (B3) & (B4). for biological levels. The interaction between mineral and biological fertilization indicated that in both the two seasons, fertilizing with mineral nitrogen alone [treatments (M2 x BI) and (M3 x B1)]increased mineral content of nitrogen, phosphorus and potassium compared with unfertilized transplants [treatment (MI x BI) ]. However, fertilizing with mineral nitrogen alone had no promising effect on iron, zinc and manganese. On the other hand, fertilizing with biological nitrogen alone [treatments (MI x B2), (MI x B3) and (MI x B4) ] increased mineral content compared with unfertilized transplants and the promising biological treatment was (MI x B3) in the two seasons. When combining mineral nitrogen with biological nitrogen, higher values were obtained especially when combining the second or the third levels of mineral nitrogen with any different rate of biological nitrogen especially levels B3 and B4. Treatments (M2 x B), (M2 x B4) and (M3 x B4) gave the highest values for N, P, K, Fe, Zn, Mo. In other words, inoculation of nitrogen fixation bacteria "Azotobacter chroococcum" to the rhizosphere can provide a part of nitrogen requirements of grape transplants and combining mineral with biological nitrogen more increasing effect on mineral content of transplants was obtained than adding any form alone and the recommended treatment was (M2 x B3)

Average rating: 0.0 (0 votes)

No physical items for this record

Includes references.

A pot experiment was carried out in 200 1 and 2002 seasons on Thompson Seedless grape transplants to study the effect of two sources of nitrogen fertilizers (mineral and biological) on leaf mineral content of transplants. The experiment included three levels of mineral nitrogen (MI =zero, M2=5 and M3=10g N/plant/year) and four levels of biological nitrogen (B.=zero, B2=50, B3= 100 and B4=200ml) of liquid culture of free living nitrogen fixation bacteria "Azotobacter chroococcum". Thus, the study is a factorial experiment in a randomized complete block design. Generally in both the two seasons levels of mineral and biological nitrogen affected mineral content in leaves (blades & petioles) and the promising levels were (M2) from mineral and (B3) & (B4). for biological levels. The interaction between mineral and biological fertilization indicated that in both the two seasons, fertilizing with mineral nitrogen alone [treatments (M2 x BI) and (M3 x B1)]increased mineral content of nitrogen, phosphorus and potassium compared with unfertilized transplants [treatment (MI x BI) ]. However, fertilizing with mineral nitrogen alone had no promising effect on iron, zinc and manganese. On the other hand, fertilizing with biological nitrogen alone [treatments (MI x B2), (MI x B3) and (MI x B4) ] increased mineral content compared with unfertilized transplants and the promising biological treatment was (MI x B3) in the two seasons. When combining mineral nitrogen with biological nitrogen, higher values were obtained especially when combining the second or the third levels of mineral nitrogen with any different rate of biological nitrogen especially levels B3 and B4. Treatments (M2 x B), (M2 x B4) and (M3 x B4) gave the highest values for N, P, K, Fe, Zn, Mo. In other words, inoculation of nitrogen fixation bacteria "Azotobacter chroococcum" to the rhizosphere can provide a part of nitrogen requirements of grape transplants and combining mineral with biological nitrogen more increasing effect on mineral content of transplants was obtained than adding any form alone and the recommended treatment was (M2 x B3)

Summary in Arabic.

There are no comments on this title.

to post a comment.