Response of irrigated mulberry (Morus alba L.) to VA-mycorrhizal inoculation under graded doses of phosphorus

Abstract

A field experiment was conducted for four years with Kanva-2 variety of mulberry, pre-inoculated with Glomus fasciculatum and Glomus mosseae at various doses of single super phosphate to examine their effect on plant growth, leaf yield and quality. The pooled data for 4 years revealed that the effect of inoculation of mulberry with Glomus mosseae in combination with 30 kg P ha-l yr-I was similar for plant growth, leaf yield and leaf chemical constituents with the control, which received the full dose of phosphatic fertilizer (120 kg P ha-l yr-l) without inoculation. This indicated a possibility to reduce phosphate fertilization in mulberry cultivation by 75%.Silkworm rearing (moulting test) also did not reveal any significant difference in the leaf quality even after reducing phosphorus application by 75% in mulberry inoculated with either Glomus mosseae or Glomusfasciculatum when compared with control. The root colonization was significantly higher in VAM inoculation at the lower levels of phosphorus compared to uninoculated control receiving the full dose of phosphate fertilizer (120 kg P ha-l yr-l) suggesting that low phosphorus levels in soil promote better VA-mycorrhizal symbiosis in mulberry.

The Vesicular Arbuscular Mycorrhiza Associated with Three Cultivars of Rice (Oryza sativa L.)

“…These are known to occur globally in a broad range of dissimilar environments from artic to tropic and occupy a wide range of ecological niches [2]. The role of VAM fungi in the improvement of crop plant is well documented [3,4,5]. VAM fungi are known to improve the nutrient status of the plants, increase growth and development, protects plant against pathogen and confer resistance to drought and salinity [6].…”

Economics of using biofertilisers and their influence on certain quantitative traits of mulberry

“…Mulberry plants, whose leaf is exclusively used for rearing silkworms (Bombyx mori L.) for subsequent cocoon production, have indicated their positive response towards the application of biofertilisers. The beneficial effect of inoculation of mulberry plants with Azotobacter bio-fertilizer and Vesicular Arbuscular mycorrhiza have been well documented by Das et al (1994a, b), Katiyar et al (1995) and Baqual et al (2005).…”

Responses of fresh leaf yield and quality variables of M5 mulberry to bio-inoculants, farm yard manure (FYM) and inorganic fertilizers under rain-fed conditions

“…Thus, NP application can be curtailed to the tune of 25% by supplementing with bio-inoculants without adverse effect on fresh leaf yield of M 5 mulberry under rain-fed condition. Katiyar et al (1995) in their earlier studies on the effect of dual inoculation of A. chroococum and G. mosseae with 50% recommended dosage of N and P fertilizers have reported that, the yield of mulberry was on par with uninoculated control receiving full dosage of N and P fertilizers. Das et al (1994) in their studies have also reported that, there was no reduction in leaf yield in K 2 variety of mulberry when 50% nitrogen fertilizer was compensated with 20 kg Azotobacter sp./ha/year.…”

“…The lowest of the same were observed in T 8 (15.61 and 5.23 mg/g) (Tables 3 and 4). Katiyar et al (1995) and Umesh (1999) reported similar leaf chemical constituent in mulberry when biofertilizers were inoculated with reduced chemical fertilizers. Curtailment of 50% N application without affecting mulberry leaf quality by supplementing mulberry through 20 kg of Azotobacter has been reported by Das et al (1994).…”