FIELD CHOPS. 35 



It is concluded that the results in this instance seemed to demonstrate that 

 while the original characters reappear they are not the same, that is, the 

 segregation is not complete. The author believes that imperfect segregation 

 must be taken into consideration as an obstacle to securing combinations of 

 characters by hybridizing, and that the occurrence of Mendelian ratios can not 

 be taken as conclusive evidence that subsequent selection will not be necessary 

 to establish the full expression of characters. 



Inheritance of waxy endosperm in hybrids with sweet com, G. N. Collins 

 and J. H. Kempton (U. S. Dept. Agr., Bur. Plant Indus. Giro. 120, pp. 21-27, 

 flg_ x)_ — This paper reports the work of crossing a Chinese variety of white corn 

 having a waxy endosperm (E. S. R., 22, p. 443) with black Mexican sweet and 

 with Voorhees Red sweet. 



The first cross produced only homy kernels that were identical with those 

 from ordinary field corn. The second generation, every ear of which bore seeds 

 of all 3 classes, waxy, sweet, and horny, segregated into approximately a 9:4:3 

 ratio. This indicates that the sweet and waxy characters are the result of 

 independent factors, and that one out of every 4 sweet seeds represents a new 

 type of sweet corn. 



Specific gravity determinations of the different classes showed no significant 

 differences, so that the differences in weight must be due to differences in size. 



Economic value of com suckers, C. B. Williams and W. C. Ethesidge 

 (North Carolina Sta. Rpt. 1912, pp. 37-40).— Continuing previous work (E. S. R.. 

 26, p. 828), notes are given on the effect of soil fertility, distance of planting, 

 variety, and season. 



During the entire period of test, from 6.4 to 14.1 times as many suckers were 

 found on corn on high-producing as on low-producing soil. In 4-ft. rows, 30-iu. 

 spacing in the row produced from 7.8 to 650 per cent more suckers, varying 

 with the fertility of the soil, than 20-in. spacing. The prolific varieties produced 

 in a 3-year average 2.6 times more suckers that bore ears than the l-ear varie- 

 ties. An unfavorable growing season decreased the percentage of suckers. 



As some characters affected by the removal of suckers are mentioned pro- 

 lificacy, size of ear, yield of grain, percentage of grain to cob, stover, and 

 combined value of grain and stover. It is noted that in general the results did 

 not warrant drawing conclusions on these topics, except in the case of the com- 

 bined value of grain and stover, which was reduced one-seventh in a 3-year 

 average of from 8 to 61 varieties by the removal of the suckers. 



Cotton experiments, 1912 {Mississippi Sta. Bui. 161, pp. 29). — This bulletin 

 reports a continuation of earlier cotton experiments in Mississippi (E. S. R., 27, 

 p. 433). and consists of 4 papers. 



Results from the Central Station are reported by J. R. Ricks and E. C. Ewing 

 (pp. 4-15). A variety test, including 27 varieties of cotton, resulted in a maxi- 

 mum yield of 656 lbs. of lint per acre, produced by Wannamaker Cleveland, and 

 a minimum of 390 lbs. by World Wonder. The total crop valuation in the first 

 instance reached $96.79, and in the second $63.04. 



In a 6-year fertilizer test, 8 tons of manure produced the largest average 

 yield of seed cotton, 1,981 lbs. per acre, while 288 lbs. each of cotton-seed meal 

 and acid phosphate per acre gave the smallest yield of 1.022 lbs. Results as 

 to the relative earliness from fertilized plats as shown by the different pickings, 

 effect of manure and kainit in preventing rust, varying distances of rows and 

 drills, and topping of the plants are also given in tabular form. 



Reports are also given of variety and fertilizer tests at the McNeill Sub- 

 station, by E. B. Ferris, and the Holly Springs Substation, by C. T. Ames; 

 variety and spacing tests at the Delta Substation are reported by G. B. Walker. 



