68 



during a most favorable season. 72 pounds of nitrogen per acre 

 proved excessive, Avhile this year, iu a very Avet season, '24 i)()nnds 

 produced almost as large a yield as 48 pounds. In other Avords, 

 during the season just ended only the nitrogen contained in 850 

 pounds of cotton-seed meal j^er acre was aj^proiDriatecl by the cane. 



E-lfecfs of rtn-ious special fertilizers on cane (pp. 243-246). — This 

 is a record of experiments Avith the St. Denis, Ville's, and other formu- 

 las. The amounts and relatiA'e proportions of the fertilizing ingre- 

 dients did not seem to be such as Avere best fitted to the soil under 

 experiment, and the cost Avas large. 



Effects of different ini.rtures of eotton-seed meal and acid phosphate 

 (pp. 246-248). — The ol)ject here Avas to get information as to the best 

 mixtures of cotton-seed meal and acid phosphate for plant cane. On 

 one plat cotton-seed meal Avas used alone: on the others it Avas com- 

 bined Avith the acid phosphate so as to give the folloAving ratios of 

 nitrogen to phosphoric acid: 1:8, 1:2, 1:1, 2:1, and 3:1. Nitrogen 

 and })hosphoric acid in the ratio of 1 :2 gaA'e the largest yield. 



iSitnirnary of results (pp. 249-252). — ''The year just closed has 

 served to emphasize in a most positiA'e manner the deductions of 

 former years. '' * * The experiments here are sufficiently \)Yo- 

 nounced in their results to convince the most skeptical of the efficacy 

 of manures on cane Avhen they are properly compounded and intelli- 

 gently applied." The results in 1888 confirm as Avell as add to the 

 conclusions from those of previous years. Among the inferences 

 draAvn from them are : 



1. The upper portion of cane is e(|ual, if not superior, to the loAver 

 part for '' seeding." 



2. •• There Avas but little dilference in the stubl)le of those plats 

 Avhereon different numbers of stalks Avere used in planting." 



3. '• Seed from good first-year stubble has given as good results the 

 first and second years as seed from j^lant." 



4. " vStubbles (rattoons) come equally Avell, and perhaps better, 

 from the original sprouts than from suckers." 



5. Nitrogen is greatly needed by the soils of Louisiana to groAV 

 cane. As the experience indicates that no one of the leading forms 

 has any marked superiority, cotton-seed meal, a chea]i home product, 

 may be used instead of exj^ensiA^e imported articles. 



6. ExcessiA'e quantities of nitrogen have this year been I)ut par- 

 tially utilized by the crop, and '' are alA\'ays injurious to sugar con- 

 tent." The experiments of the past three years strongly suggest that 

 from 21 to 42 pounds of nitrogen per acre (the amount found in from 

 300 to 600 pounds of cotton-seed meal) are all that can be profitably 

 used. To produce the best results the nitrogen should be combined 

 Avith mineral manures. 



7. The mineral manures alone are Avithout decided ettects. except 

 on ncAv grounds and pea-vine falloAvs, and cAen then the yiehls are 

 often much imjn-oA-ed by nitrogenous fertilizers. 



8. The i)hos])horic acid needed by the soils of the State is best sup- 



