Nitrogen （N） was applied at rates of 0, 100, 200 and 300 kg.ha^-1 and boron （B） was applied as foliar at rates 0, 500 and 1000 g.ha^-1 to study the effect of different application rates of nitrogen and boron ferti...Nitrogen （N） was applied at rates of 0, 100, 200 and 300 kg.ha^-1 and boron （B） was applied as foliar at rates 0, 500 and 1000 g.ha^-1 to study the effect of different application rates of nitrogen and boron fertilizers on yield, yield components and fiber properties of cotton. Statistical results of study showed that N application significantly （P 〈 0.05） enhanced boll number, boll weight, seed cotton weight of boll, seed cotton yield and lint yield. Results of study also indicated that the maximum seed cotton yield was recorded in case of 200 kg.ha^-1 N application rate, and this application rate resulted in 19.6% increased seed cotton yield. Statistical results also indicated that foliar application of B significantly enhanced boll number, boll weight, seed cotton yield and lint yield. Results also demonstrated that the maximum seed cotton yield was obtained in case of 1000 g.hal foliar application of B, and this foliar application rate resulted in 25% increased seed cotton yield. Statistical results showed that effect of different application rates of N was not significant for all fiber properties （fiber length, fiber strength and fiber fineness）. Conversely, results of study indicated that different application rates of B significantly affected some fiber properties.展开更多
Nearly 70 years ago,the earliest accurate test equipment for cotton fiber properties were introduced to the market.These were the so-called Low Volume Instruments（LVI）,which made an immediate market impact at the ti...Nearly 70 years ago,the earliest accurate test equipment for cotton fiber properties were introduced to the market.These were the so-called Low Volume Instruments（LVI）,which made an immediate market impact at the time,and which in later years were the platform for the development of the high-speed integrated system known as High Volume Instrument（HVI）testing.展开更多
文摘Nitrogen （N） was applied at rates of 0, 100, 200 and 300 kg.ha^-1 and boron （B） was applied as foliar at rates 0, 500 and 1000 g.ha^-1 to study the effect of different application rates of nitrogen and boron fertilizers on yield, yield components and fiber properties of cotton. Statistical results of study showed that N application significantly （P 〈 0.05） enhanced boll number, boll weight, seed cotton weight of boll, seed cotton yield and lint yield. Results of study also indicated that the maximum seed cotton yield was recorded in case of 200 kg.ha^-1 N application rate, and this application rate resulted in 19.6% increased seed cotton yield. Statistical results also indicated that foliar application of B significantly enhanced boll number, boll weight, seed cotton yield and lint yield. Results also demonstrated that the maximum seed cotton yield was obtained in case of 1000 g.hal foliar application of B, and this foliar application rate resulted in 25% increased seed cotton yield. Statistical results showed that effect of different application rates of N was not significant for all fiber properties （fiber length, fiber strength and fiber fineness）. Conversely, results of study indicated that different application rates of B significantly affected some fiber properties.
文摘Nearly 70 years ago,the earliest accurate test equipment for cotton fiber properties were introduced to the market.These were the so-called Low Volume Instruments（LVI）,which made an immediate market impact at the time,and which in later years were the platform for the development of the high-speed integrated system known as High Volume Instrument（HVI）testing.
